‫مقررات هواپیمایی کشوری جمهوری اسالمی ایران‬

Civil Aviation Regulation of IR.IRAN

‫الزامات تداوم صالحیت پرواز‬

M-‫بخش‬

Continuing Airworthiness Requirements

CAO.IRI Part-M

DATE: 25.06.2016
ISSUE: 02
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CAO.IRI Part-M Continuing Airworthiness Requirement

RECORD OF CHANGES

The amendments are announced regularly in the CAO.IRI website, to which holders/users of
this publication should refer. The space below is provided to keep a record of such
amendments

Type of Change Date of Change Remarks

Original Issue 16.03.2013

Revision 01 05.01.2014

Issue 02 25.Jun.2016
Revision 00

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 CAO.IRI Part-M Continuing Airworthiness Requirement

Table of Contents
Objective and scope ____________________________________________________________________ 1
Definitions ____________________________________________________________________________ 1
Continuing Airworthiness Requirements ____________________________________________________ 4
Maintenance Organisation Approval _______________________________________________________ 5
Certifying Staff _________________________________________________________________________ 5
Training organisation requirements ________________________________________________________ 5
M.1 General ___________________________________________________________________________ 5
TECHNICAL REQUIREMENTS ______________________________________________________________ 7
GENERAL______________________________________________________________________________ 7
M.A.101 Scope _________________________________________________________________________ 7
ACCOUNTABILITY _______________________________________________________________________ 8
M.A.201 Responsibilities_________________________________________________________________ 8
M.A.202 Occurrence reporting ___________________________________________________________ 11
Continuing Airworthiness _______________________________________________________________ 12
M.A.301 Continuing airworthiness tasks ___________________________________________________ 12
M.A.302 Aircraft Maintenance Programme ________________________________________________ 12
M.A.303 Airworthiness directives ________________________________________________________ 13
Applicable airworthiness directive means: _________________________________________________ 14
M.A.304 Data for modifications and repairs ________________________________________________ 14
M.A.305 Aircraft continuing airworthiness record system_____________________________________ 14
M.A.306 Operator’s technical log system __________________________________________________ 16
M.A.307 Transfer of aircraft continuing airworthiness records _________________________________ 16
Maintenance Standards ________________________________________________________________ 17
M.A.401 Maintenance data _____________________________________________________________ 17
M.A.402 Performance of maintenance ____________________________________________________ 17
M.A.403 Aircraft defects ________________________________________________________________ 18
Components __________________________________________________________________________ 19
M.A.501 Installation ___________________________________________________________________ 19
M.A.502 Component maintenance _______________________________________________________ 19
M.A.503 Service life limited components __________________________________________________ 20

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M.A.504 Control of unserviceable components _____________________________________________ 20

Maintenance Organisation ______________________________________________________________ 22
M.A.601 Scope ________________________________________________________________________ 22
M.A.602 Application ___________________________________________________________________ 22
M.A.603 Extent of approval _____________________________________________________________ 22
M.A.604 Maintenance organisation manual ________________________________________________ 22
M.A.605 Facilities _____________________________________________________________________ 23
M.A.606 Personnel requirements ________________________________________________________ 23
M.A.607 Certifying staff ________________________________________________________________ 24
M.A.608 Components, equipment and tools _______________________________________________ 25
M.A.609 Maintenance data _____________________________________________________________ 25
M.A.610 Maintenance work orders _______________________________________________________ 25
M.A.611 Maintenance standards _________________________________________________________ 26
M.A.612 Aircraft certificate of release to service ____________________________________________ 26
M.A.613 Component certificate of release to service ________________________________________ 26
M.A.614 Maintenance records ___________________________________________________________ 26
M.A.615 Privileges of the organisation ____________________________________________________ 27
M.A.616 Organisational review __________________________________________________________ 27
M.A.617 Changes to the approved maintenance organisation _________________________________ 27
M.A.618 Continued validity of approval ___________________________________________________ 28
M.A.619 Findings ______________________________________________________________________ 28
M.A.620 Maintenance personnel duty time limitations _______________________________________ 28
Continuing Airworthiness Management Organisation ________________________________________ 29
M.A.701 Scope ________________________________________________________________________ 29
M.A.702 Application ___________________________________________________________________ 29
M.A.703 Extent of approval _____________________________________________________________ 29
M.A.704 Continuing airworthiness management exposition ___________________________________ 29
M.A.705 Facilities _____________________________________________________________________ 30
M.A.706 Personnel requirements ________________________________________________________ 30
M.A.707 Airworthiness review staff ______________________________________________________ 31
M.A.708 Continuing airworthiness management ____________________________________________ 32
M.A.709 Documentation ________________________________________________________________ 33
M.A.710 Airworthiness review ___________________________________________________________ 34

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M.A.711 Privileges of the organisation ____________________________________________________ 35

M.A.712 Quality system ________________________________________________________________ 36
M.A.713 Changes to the approved continuing airworthiness organisation _______________________ 37
M.A.714 Record-keeping________________________________________________________________ 37
M.A.715 Continued validity of approval ___________________________________________________ 38
M.A.716 Findings ______________________________________________________________________ 38
Certificate of Release to Service – CRS _____________________________________________________ 38
M.A.801 Aircraft certificate of release to service ____________________________________________ 38
M.A.802 Component certificate of release to service ________________________________________ 40
M.A.803 Pilot-owner authorization _______________________________________________________ 40
Airworthiness Review Certificate _________________________________________________________ 42
M.A.901 Aircraft airworthiness review ____________________________________________________ 42
M.A.902 Validity of the airworthiness review certificate ______________________________________ 44
M.A.903 Reserved _____________________________________________________________________ 44
M.A.904 Airworthiness review of aircraft imported into Iran __________________________________ 44
M.A.905 Findings ______________________________________________________________________ 45
Procedure for CAO.IRI __________________________________________________________________ 46
GENERAL_____________________________________________________________________________ 46
M.B.101 Scope ________________________________________________________________________ 46
M.B.102 Organisation requirements ______________________________________________________ 46
M.B.103 Acceptable means of compliance _________________________________________________ 47
M.B.104 Record-keeping ________________________________________________________________ 47
M.B.105 Reserved _____________________________________________________________________ 47
Accountability ________________________________________________________________________ 48
M.B.201 Responsibilities ________________________________________________________________ 48
Continuing Airworthiness _______________________________________________________________ 49
M.B.301 Maintenance programme _______________________________________________________ 49
M.B.302 Exemptions ___________________________________________________________________ 49
M.B.303 Aircraft continuing airworthiness monitoring _______________________________________ 49
M.B.304 Revocation, suspension and limitation _____________________________________________ 50
Maintenance Standards ________________________________________________________________ 51
Components __________________________________________________________________________ 52
Maintenance Organisation ______________________________________________________________ 53

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M.B.601 Application ___________________________________________________________________ 53

M.B.602 Initial Approval ________________________________________________________________ 53
M.B.603 Issue of approval ______________________________________________________________ 53
M.B.604 Continuing oversight ___________________________________________________________ 54
M.B.605 Findings ______________________________________________________________________ 54
M.B.606 Changes ______________________________________________________________________ 54
B.607 Revocation, suspension and limitation of an approval __________________________________ 55
Continuing Airworthiness Management Organisation ________________________________________ 56
M.B.701 Application ___________________________________________________________________ 56
M.B.702 Initial approval ________________________________________________________________ 56
M.B.703 Issue of approval ______________________________________________________________ 57
M.B.704 Continuing oversight ___________________________________________________________ 57
M.B.705 Findings ______________________________________________________________________ 57
M.B.706 Changes ______________________________________________________________________ 58
M.B.707 Revocation, suspension and limitation of an approval ________________________________ 58
Certificate of Release to Service – CRS _____________________________________________________ 59
Airworthiness Review Certificate _________________________________________________________ 60
M.B.901 Assessment of recommendations _________________________________________________ 60
M.B.902 Airworthiness review by CAO.IRI _________________________________________________ 60
M.B.903 Findings ______________________________________________________________________ 61
Continuing Airworthiness Arrangement ___________________________________________________ 62
Authorized Release Certificate CAO.IRI Form 1 ______________________________________________ 65
Block 1 Approving CAO.IRI/Country _______________________________________________________ 66
Block 2 CAO.IRI Form 1 headers __________________________________________________________ 66
Block 3 Form Tracking Number ___________________________________________________________ 66
Block 4 Organisation Name and Address ___________________________________________________ 66
Block 5 Work Order/Contract/Invoice _____________________________________________________ 66
Block 6 Item __________________________________________________________________________ 67
Block 7 Description ____________________________________________________________________ 67
Block 8 Part Number ___________________________________________________________________ 67
Block 9 Quantity ______________________________________________________________________ 67
Block 10 Serial Number _________________________________________________________________ 67
Block 11 Status/Work __________________________________________________________________ 67

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Block 12 Remarks _____________________________________________________________________ 68

Block 13a-13e _________________________________________________________________________ 69
Block 14a ____________________________________________________________________________ 69
Block 14b Authorized Signature __________________________________________________________ 69
Block 14c Certificate/Approval Number ___________________________________________________ 69
Block 14d Name _______________________________________________________________________ 70
Block 14e Date ________________________________________________________________________ 70
User/Installer Responsibilities ___________________________________________________________ 70
Airworthiness Review Certificate _________________________________________________________ 72
CAO.IRI Form 15.a _____________________________________________________________________ 72
Class and Ratings System to be used for the Approval of Maintenance Organisations referred to in Part-
M Subpart F and Part-145 _______________________________________________________________ 74
CAO.IRI Form 3.a ______________________________________________________________________ 79
Maintenance Organisation Approval referred to Part-M Subpart F _____________________________ 79
CAO Form 14 _________________________________________________________________________ 80
Continuing Airworthiness Management Organisation ________________________________________ 80
Approval referred to Part-M Subpart G ____________________________________________________ 80
Complex Maintenance Tasks ____________________________________________________________ 82
Limited Pilot-Owner Maintenance ________________________________________________________ 84
CAO.IRI Form 2.a ______________________________________________________________________ 86
Application for Maintenance Organisation Approval _________________________________________ 86
CAO.IRI Form10 _______________________________________________________________________ 90

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CAO.IRI Part-M Continuing Airworthiness Requirement

For the continuing airworthiness of aircraft, aeronautical products, parts and appliances,
and on the approval of organisations and personnel involved in these tasks CAO.IRI
issued following continuing airworthiness articles.

Article 1
Objective and scope

This Regulation establishes common technical requirements and administrative

procedures for ensuring the continuing airworthiness of aircraft, including any component
for installation thereto, which are:

The continuing airworthiness of aircraft, including any component for installation

thereto, which are:
i. Registered in IRAN except aircraft registered according to "bylaw of
management and organizing of civil ultralight aircraft" issued by
ministry bureau, unless their regulatory safety oversight has been
delegated to a third country and they are not used by an Iran operator; or
ii. Registered in another country and used by an operator for which CAO.IRI
has the responsibility for the oversight of such operations.

Article 2
Definitions

The following definitions shall apply:

(1) ‘Aircraft’ means any machine that can derive support in the atmosphere from the
reactions of the air other than reactions of the air against the earth's surface;

(2) ‘Certifying staff’ means personnel responsible for the release of an aircraft or a
component after maintenance;

(3) ‘Component’ means any engine, propeller, part or appliance;

(4) ‘Continuing airworthiness’ means all of the processes ensuring that, at any time in
its operating life, the aircraft complies with the airworthiness requirements in force and
is in a condition for safe operation;

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(5) ‘Large aircraft’ means an aircraft, classified as an aeroplane with a maximum take-
off mass of more than 5 700 kg, or a multi-engined helicopter;

(6) ‘Maintenance’ means any one or combination of overhaul, repair, inspection,

replacement, modification or defect rectification of an aircraft or component, with the
exception of preflight inspection;

(7) ‘Organisation’ means a natural person, a legal person or part of a legal person.

(8) ‘Preflight inspection’ means the inspection carried out before flight to ensure that
the aircraft is fit for the intended flight;

(9) ‘ILA1 aircraft’ means the following Iranian Light Aircraft:

(a) an aeroplane with a maximum take-off mass (MTOM) of 1 200 kg or less that is
not classified as complex motorpowered aircraft;

(b) a sailplane or powered sailplane of 1 200 kg MTOM or less; (iii) An airship

designed for not more than two occupants and a maximum design lifting gas or hot
air volume of not more than 2 500 m³ for hot air airships and 1 000 m³ for gas
airships;

(c) a balloon with a maximum design lifting gas or hot air volume of not more than 3
400 m3 for hot air balloons, 1 050 m3 for gas balloons, 300 m3 for tethered gas
balloons;

(d) an airship designed for not more than four occupants and a maximum design
lifting gas or hot air volume of not more than 3 400 m3 for hot air airships and 1
000 m3 for gas airships;

(10) “ILA2 aircraft” means the following manned European Light Aircraft:

(a) an aeroplane with a Maximum Take-off Mass (MTOM) of 2 000 kg or less that is
not classified as complex motorpowered aircraft;

(b) a sailplane or powered sailplane of 2 000 kg MTOM or less;

(c) a balloon;

(d) a hot air ship;

(e) a gas airship complying with all of the following characteristics: — 3 % maximum
static heaviness, — non-vectored thrust (except reverse thrust), — conventional and
simple design of structure, control system and ballonet system, and — non-power
assisted controls;

(f) a Very Light Rotorcraft.

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(11) ‘LSA aircraft’ means a light sport aeroplane which has all of the following
characteristics:

(a) A Maximum Take-off Mass (MTOM) of not more than 600 kg;
(b) A maximum stalling speed in the landing configuration (VS0) of not more than 45
knots Calibrated Airspeed (CAS) at the aircraft’s maximum certificated take-off
mass and most critical center of gravity;

(c) A maximum seating capacity of no more than two persons, including the pilot;

(d) A single, non-turbine engine fitted with a propeller;

(e) A non-pressurized cabin;

(12) “Critical maintenance task” means a maintenance task that involves the assembly
or any disturbance of a system or any part on an aircraft, engine or propeller that, if an
error occurred during its performance, could directly endanger the flight safety;

(13) ‘Complex motor-powered aircraft’ shall mean:

(a) an aeroplane:

— with a maximum certificated take-off mass exceeding 5 700 kg, or

— certificated for a maximum passenger seating configuration of more than

nineteen, or

— certificated for operation with a minimum crew of at least two pilots, or

— equipped with (a) turbojet engine(s) or more than one turboprop engine, or

(b) a helicopter certificated:

— for a maximum take-off mass exceeding 3 175 kg, or

— for a maximum passenger seating configuration of more than nine, or

— for operation with a minimum crew of at least two pilots, or

(c) a tilt rotor aircraft;

(14) “Commercial air transport (CAT) operation” means an aircraft operation to

transport passengers, cargo or mail for remuneration or other valuable consideration;

(15) ‘Air service’ means a flight or a series of flights carrying passengers, cargo and/or
mail for remuneration and/or hire;

(16) “Limited operations” means the operations of other-than-complex motor-powered

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aircraft for:

(a) cost-shared flights by private individuals, on the condition that the direct cost is
shared by all the occupants of the aircraft, pilot included and the number of persons
sharing the direct costs is limited to six;

(b) competition flights or flying displays, on the condition that the remuneration or
any valuable consideration given for such flights is limited to recovery of direct
costs and a proportionate contribution to annual costs, as well as prizes of no more
than a value specified by CAO.IRI;

(c) introductory flights, parachute dropping, sailplane towing or aerobatic flights

performed either by a approved training organisation having its principal place of
business in a Iran, or by an organisation created with the aim of promoting aerial
sport or leisure aviation, on the condition that the aircraft is operated by the
organisation on the basis of ownership or dry lease, that the flight does not generate
profits distributed outside of the organisation, and that whenever non-members of
the organisation are involved, such flights represent only a marginal activity of the
organisation;
For the purpose of this Regulation, “limited operations” are not considered as CAT
operations or commercial specialised operations;

Article 3
Continuing Airworthiness Requirements

(a) The continuing airworthiness of aircraft and components shall be ensured in

accordance with the provisions of CAO.IRI Part-M.
(b) Organisations and personnel involved in the continuing airworthiness of aircraft and
components, including maintenance, shall comply with the provisions of CAO.IRI
Part-M, and where appropriate those specified in Article 4 and Article 5.
(c) By derogation from paragraph (a), the continuing airworthiness of aircraft holding a
Flight Permit shall be ensured on the basis of the specific continuing airworthiness
arrangements as defined in the Flight Permit issued in accordance with CAO.IRI
Part-21.

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Article 4
Maintenance Organisation Approval

(a) Organisations involved in the maintenance of large aircraft or of aircraft used for
commercial air transport, and components intended for fitment thereto, shall be
approved in accordance with the provisions of CAO.IRI Part-145.
(b) Organisations involved in the maintenance of aircraft and components not listed in
point (a), shall be approved in accordance with the provisions of Subpart F of
CAO.IRI Part-M or CAO.IRI Part-145.

Article 5
Certifying Staff

Certifying staff shall be qualified in accordance with the provisions of CAO.IRI Part-66,
except as provided for in points M.A.606(h), M.A.607(b), M.A.801(d) and M.A.803 of
CAO.IRI Part-M and in point 145.A.30(j), 145.A.30(i) and Appendix III to CAO.IRI Part-
145.

Article 6
Training organisation requirements

Organisations involved in the training of personnel referred to in Article 5 shall be

approved in accordance with CAO.IRI Part-147 to be entitled:

(a) to conduct recognised basic training courses; and/or

(b) to conduct recognised type training courses; and
(c) to conduct examinations; and
(d) to issue training certificates.

M.1 General

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For the purpose of this part, "the Civil Aviation Organisation of the Islamic Republic of
Iran", hereinafter referred to as "CAO.IRI", shall be the Authority:

(a) For the oversight of the continuing airworthiness of individual aircraft and the issue
of airworthiness review certificates, and
(b) For the oversight of a maintenance organisation as specified in M.A. Subpart F, and
(c) For the oversight of a continuing airworthiness management organisation as specified
in M.A.Subpart G, and
(d) For the approval of maintenance programmes:
(i) if the aircraft is registered in Iran, or
(ii) if agreed with the State of registry prior to the approval of the maintenance
programme.
(iii) By derogation from paragraph (i), when the continuing airworthiness of an
aircraft is managed by an organisation not subject to the oversight of
CAO.IRI, the authority designated by State responsible for the oversight of
the continuing airworthiness management organisation if agreed with the
CAO.IRI prior to the approval of the maintenance programme.

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SECTION A
TECHNICAL REQUIREMENTS

SUBPART A
GENERAL

M.A.101 Scope

This Section establishes the measures to be taken to ensure that airworthiness is

maintained, including maintenance. It also specifies the conditions to be met by the
persons or organisations involved in such continuing airworthiness management.

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SUBPART B
ACCOUNTABILITY

M.A.201 Responsibilities

The owner is responsible for the continuing airworthiness of an aircraft and shall
ensure that no flight takes place unless:
(1) The aircraft is maintained in an airworthy condition, and;
(2) Any operational and emergency equipment fitted is correctly installed and
serviceable or clearly identified as unserviceable, and;
(3) The airworthiness certificate remains valid, and;
(4) The maintenance of the aircraft is performed in accordance with the approved
maintenance programme as specified in M.A.302.
When the aircraft is leased, the responsibilities of the owner are transferred to the
lessee if:
(1) The lessee is stipulated on the registration document, or;
(2) Detailed in the leasing contract.
When reference is made in this Part to the “owner”, the term owner covers the
owner or the lessee, as applicable.

Any person or organisation performing maintenance shall be responsible for the

tasks performed.
The pilot in command or, in the case of commercial air transport, the operator shall
be responsible for the satisfactory accomplishment of the preflight inspection. This
inspection must be carried out by the pilot or another qualified person but need not
be carried out by an approved maintenance organisation or by Part-66 certifying
staff.
In the case of aircraft used in Commercial Air Transport (AOC holder), the
operator is responsible for the continuing airworthiness of the aircraft it operates
and shall:
(1) ensure that no flight takes place unless the conditions defined in point (a) are
met;
(2) be approved, as part of its air operator certificate, as a continuing airworthiness
management organisation pursuant to M.A. Subpart G (CAMO) for the aircraft
it operates; and
(3) be approved in accordance with Part-145 or establish a contract in accordance
with M.A.708(c) with such organisation.

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For Complex motor-powered aircraft used for commercial specialised operations,

or commercial ATOs, the operator shall ensure that:
(1) no flight takes place unless the conditions defined in paragraph (a) are met;
(2) the tasks associated with continuing airworthiness are performed by an
approved CAMO. When the operator is not CAMO approved itself then the
operator shall establish a written contract in accordance with Appendix I with
such an organisation, and
(3) the CAMO referred to in (2) is approved in accordance with Part-145 for the
maintenance of the aircraft and components for installation thereon, or it has
established a contract in accordance with M.A.708(c) with such organisations.
For Complex motor-powered aircraft not included in point (e) or point (f), the
owner shall ensure that:
(1) no flight takes place unless the conditions defined in paragraph (a) are met;
(2) the tasks associated with continuing airworthiness are performed by an
approved CAMO. When the owner is not CAMO approved itself then the owner
shall establish a written contract in accordance with Appendix I with such an
organisation, and
(3) the CAMO referred to in (2) is approved in accordance with Part-145 for the
maintenance of the aircraft and components for installation thereon, or it has
established a contract in accordance with M.A.708(c) with such organisations.
For other than Complex motor-powered aircraft, used for commercial specialised
operations, or Commercial Air Transport that performed by non-power-driven
aircraft or Commercial Air Transport that performed in local flight, or commercial
ATOs, the operator shall ensure that:
(1) no flight takes place unless the conditions defined in point (a)are met;
(2) the tasks associated with continuing airworthiness are performed by an
approved CAMO. When the operator is not CAMO approved itself then the
operator shall establish a written contract in accordance with Appendix I with
such an organisation, and
(3) the CAMO referred to in point (2) is approved in accordance with Part-M
Subpart-F or Part-145 for the maintenance of the aircraft and components for
installation thereon, or it has established a contract in accordance with
M.A.708(c) with such organisations.
For other than Complex motor-powered aircraft not included in point (e) or (h), or
used for “limited operations”, the owner is responsible for ensuring that no flight
takes place unless the conditions defined in point (a) are met. To that end, the
owner shall:

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(1) contract the tasks associated with continuing airworthiness to an approved

CAMO though a written contract in accordance with Appendix I, which will
transfer the responsibility for the accomplishment of these tasks to the
contracted CAMO, or;
(2) manage the continuing airworthiness of the aircraft under its own responsibility,
without contracting an approved CAMO;
(3) ensure that maintenance carried out according CAO.IRI Part-M or CAO.IRI
Part-145.
The owner/operator is responsible for granting CAO.IRI access to the
organisation/aircraft to determine continued compliance with this Part.

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M.A.202 Occurrence reporting

(a) Any person or organisation responsible in accordance with point M.A.201 shall
report to the State of Registry, the organisation responsible for the type design or
supplemental type design and, if applicable, the State of Operator, any identified
condition of an aircraft or component which endangers flight safety.
(b) Reports shall be made in a manner established by in Appendix VIII of CAO.IRI
Part-145 and ensure that they contain all pertinent information about the condition
and evaluation results known to the organisation. The report to organisation
responsible for the design of the aircraft or component that is not approved from
CAO.IRI shall be makes in a form and manner established by such organisation.
(c) Where the person or organisation maintaining the aircraft is contracted by an owner
or an operator to carry out maintenance, the person or the organisation maintaining
the aircraft shall also report to the owner, the operator or the continuing
airworthiness management organisation any such condition affecting the owner’s or
the operator’s aircraft or component.
(d) Reports shall be made as soon as practicable, but in any case within 72 hours of the
person or organisation identifying the condition to which the report relates.

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SUBPART C
Continuing Airworthiness

M.A.301 Continuing airworthiness tasks

The aircraft continuing airworthiness and the serviceability of both operational and
emergency equipment shall be ensured by:

(a) The accomplishment of preflight inspections;

(b) The rectification in accordance with the data specified in point M.A.304 and/or
point M.A.401, as applicable, of any defect and damage affecting safe operation,
taking into account, the minimum equipment list and configuration deviation list as
applicable to the aircraft type;
(c) The accomplishment of all maintenance, in accordance with the M.A.302 approved
aircraft maintenance programme;
(d) For all complex motor-powered aircraft or aircraft used for commercial air
transport, the analysis of the effectiveness of the M.A.302 approved maintenance
programme;
The accomplishment of any applicable:
(i) Airworthiness directive,
(ii) Operational directive with a continuing airworthiness impact,
(iii) continued airworthiness requirement established by CAO.IRI,
(iv) Measures mandated by CAO.IRI in immediate reaction to a safety problem;

The accomplishment of modifications and repairs in accordance with M.A.304;

For non-mandatory modifications and/or inspections, for all complex motor-
powered aircraft or aircraft used for commercial air transport the establishment of
an embodiment policy;
Maintenance check flights when necessary.

M.A.302 Aircraft Maintenance Programme

(a) Maintenance of each aircraft shall be organised in accordance with an aircraft

maintenance programme.
(b) The aircraft maintenance programme and any subsequent amendments shall be
approved by CAO.IRI.

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(c) When the continuing airworthiness of the aircraft is managed by a continuing

airworthiness management organisation approved in accordance with Section A,
Subpart G of this Part, minor changes of the aircraft maintenance programme and
its amendments may be approved through an indirect approval procedure.
(i) In that case, the indirect approval procedure shall be established by the
continuing airworthiness management organisation as part of the Continuing
Airworthiness Management Exposition and shall be approved by CAO.IRI.
(ii) Reserved
(d) The aircraft maintenance programme must establish compliance with:
(i) Instructions issued or accepted by CAO.IRI
(ii) Instructions for continuing airworthiness issued by the holders of the type
certificate, restricted type certificate, supplemental type certificate, major
repair design approval, TSO authorization or any other relevant approval
issued under CAO.IRI.
(iii) additional or alternative instructions proposed by the owner or the
continuing airworthiness management organisation once approved in
accordance with point M.A.302, except for intervals of safety related tasks
referred in paragraph (e), which may be escalated, subject to sufficient
reviews carried out in accordance with paragraph (g) and only when subject
to direct approval in accordance with point M.A.302 (b).
(e) The aircraft maintenance programme shall contain details, including frequency, of
all maintenance to be carried out, including any specific tasks linked to the type and
the specificity of operations.
(f) For complex motor-powered aircraft, when the maintenance programme is based on
maintenance steering group logic or on condition monitoring, the aircraft
maintenance programme shall include a reliability programme.
(g) The aircraft maintenance programme shall be subject to periodic reviews and
amended accordingly when necessary. These reviews will ensure that the
programme continues to be valid in light of the operating experience and
instructions from CAO.IRI whilst taking into account new and/or modified
maintenance instructions promulgated by the type certificate and supplementary
type certificate holders and any other organisation that publishes such data in
accordance with CAO.IRI. Part-21 or equivalent.
(h) Reserved
(i) Reserved

M.A.303 Airworthiness directives

Any applicable airworthiness directive must be carried out within the requirements of that
airworthiness directive unless otherwise specified by CAO.IRI.

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Applicable airworthiness directive means:

(i) those airworthiness directives that issued by first state of design of the
aircraft, its engines or components.
(ii) by derogation of point (i), when the CAO.IRI issue an airworthiness
directive, this airworthiness directive is applicable.

M.A.304 Data for modifications and repairs

Damage shall be assessed and modifications and repairs carried out using data approved
by CAO.IRI or by an approved Part-21 design organisation, as appropriate.

M.A.305 Aircraft continuing airworthiness record system

(a) At the completion of any maintenance, the certificate of release to service required
by point M.A.801 or point 145.A.50 shall be entered in the aircraft continuing
airworthiness records. Each entry shall be made as soon as practicable but in no
case more than 30 days after the day of the maintenance action.
(b) The aircraft continuing airworthiness records shall consist of:
(1) an aircraft logbook, engine logbook(s) or engine module log cards, propeller
logbook(s) and log cards, for any service life limited component as appropriate,
and,
(2) when required in point M.A.306, the operator’s technical log.
(c) The aircraft type and registration mark, the date, together with total flight time and/
or flight cycles and/or landings, as appropriate, shall be entered in the aircraft log
books.
(d) The aircraft continuing airworthiness records shall contain the current:
(1) Status of airworthiness directives and measures mandated by CAO.IRI in
immediate reaction to a safety problem;
(2) Status of modifications and repairs;
(3) Status of compliance with maintenance programme;
(4) Status of service life limited components;
(5) Mass and balance report;
(6) 6List of deferred maintenance.
(e) In addition to the authorized release document, CAO.IRI Form 1 or equivalent, the
following information relevant to any component installed (engine, propeller,
engine module or service life limited component) shall be entered in the appropriate
engine or propeller logbook, engine module or service life limited component log
card:
(1) Identification of the component; and

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(2) The type, serial number and registration, as appropriate, of the aircraft, engine,
propeller, engine module or service life limited component to which the
particular component has been fitted, along with the reference to the installation
and removal of the component; and
(3) The date together with the component’s accumulated total flight time and/or
flight cycles and/or landings and/or calendar time, as appropriate; and
(4) The current paragraph (d) information applicable to the component.
(f) The person responsible for the management of continuing airworthiness tasks
pursuant to M.A. Subpart B, shall control the records as detailed in this paragraph
and present the records to the CAO.IRI upon request.
(g) All entries made in the aircraft continuing airworthiness records shall be clear and
accurate. When it is necessary to correct an entry, the correction shall be made in a
manner that clearly shows the original entry.
(h) An owner or operator shall ensure that a system has been established to keep the
following records for the periods specified:
(1) all detailed maintenance records in respect of the aircraft and any service life
limited component fitted thereto, until such time as the information contained
therein is superseded by new information equivalent in scope and detail but not
less than 36 months after the aircraft or component has been released to service;
and
(2) the total time in service (hours, calendar time, cycles and landings) of the
aircraft and all service life limited components, at least 12 months after the
aircraft or component has been permanently withdrawn from service; and
(3) the time in service (hours, calendar time, cycles and landings) as appropriate,
since last scheduled maintenance of the component subjected to a service life
limit, at least until the component scheduled maintenance has been superseded
by another scheduled maintenance of equivalent work scope and detail; and the
current status of compliance with maintenance programme such that compliance
with the approved aircraft maintenance programme can be established, at least
until the aircraft or component scheduled maintenance has been superseded by
other scheduled maintenance of equivalent work scope and detail; and
(4) The current status of airworthiness directives applicable to the aircraft and
components, at least 12 months after the aircraft or component has been
permanently withdrawn from service; and
(5) Details of current modifications and repairs to the aircraft, engine(s),
propeller(s) and any other component vital to flight safety, at least 12 months
after they have been permanently withdrawn from service.

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M.A.306 Operator’s technical log system

(a) In the case of commercial air transport, in addition to the requirements of M.A.305,
an operator shall use an aircraft technical log system containing the following
information for each aircraft:
(1) Information about each flight, necessary to ensure continued flight safety, and;
(2) The current aircraft certificate of release to service, and;
(3) The current maintenance statement giving the aircraft maintenance status of
what scheduled and out of phase maintenance is next due except that CAO.IRI
may agree to the maintenance statement being kept elsewhere, and;
(4) All outstanding deferred defects rectifications that affect the operation of the
aircraft, and;
(5) Any necessary guidance instructions on maintenance support arrangements.
(b) The aircraft technical log system and any subsequent amendment shall be approved
by CAO.IRI.
(c) An operator shall ensure that the aircraft technical log is retained for 36 months
after the date of the last entry.

M.A.307 Transfer of aircraft continuing airworthiness records

(a) The owner or operator shall ensure when an aircraft is permanently transferred from
one owner or operator to another that the M.A.305 continuing airworthiness records
and, if applicable, M.A.306 operator’s technical log is also transferred.
(b) The owner shall ensure, when he contracts the continuing airworthiness
management tasks to a continuing airworthiness management organisation, that the
M.A.305 continuing airworthiness records are transferred to the organisation.
(c) The time periods prescribed for the retention of records shall continue to apply to
the new owner, operator or continuing airworthiness management organisation.

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SUBPART D
Maintenance Standards

M.A.401 Maintenance data

The person or organisation maintaining an aircraft shall have access to and use only
applicable current maintenance data in the performance of maintenance including
modifications and repairs.
For the purposes of this Part, applicable maintenance data is:
(1) Any applicable requirement, procedure, standard or information issued by
CAO.IRI,
(2) Any applicable airworthiness directive,
(3) Applicable instructions for continuing airworthiness, issued by type certificate
holders, supplementary type certificate holders and any other organisation that
publishes such data in accordance with Part-21.
(4) Any applicable data issued in accordance with 145.A.45 (d).
The person or organisation maintaining an aircraft shall ensure that all applicable
maintenance data is current and readily available for use when required. The person
or organisation shall establish a work card or worksheet system to be used and shall
either transcribe accurately the maintenance data onto such work cards or
worksheets or make precise reference to the particular maintenance task or tasks
contained in such maintenance data.

M.A.402 Performance of maintenance

Except for maintenance performed by a maintenance organisation approved in accordance

with CAO.IRI Part-145, any person or organisation performing maintenance shall:

be qualified for the tasks performed, as required by this part

ensure that the area in which maintenance is carried out is well organised and clean
in respect of dirt and contamination;
use the methods, techniques, standards and instructions specified in the M.A.401
maintenance data;
use the tools, equipment and material specified in the M.A.401 maintenance data.
If necessary, tools and equipment shall be controlled and calibrated to an officially
recognised standard;
ensure that maintenance is performed within any environmental limitations
specified in the M.A.401 maintenance data;

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ensure that proper facilities are used in case of inclement weather or lengthy
maintenance;
ensure that the risk of multiple errors during maintenance and the risk of errors
being repeated in identical maintenance tasks are minimised;
ensure that an error capturing method is implemented after the performance of any
critical maintenance task; and
carry out a general verification after completion of maintenance to ensure the
aircraft or component is clear of all tools, equipment and any extraneous parts or
material, and that all access panels removed have been refitted.

M.A.403 Aircraft defects

(a) Any aircraft defect that hazards seriously the flight safety shall be rectified before
further flight.
(b) Only the authorized certifying staff, according to points M.A.801(b)1,
M.A.801(b)2, M.A.801(c), M.A.801(d) or CAO.IRI Part-145 can decide, using
M.A.401 maintenance data, whether an aircraft defect hazards seriously the flight
safety and therefore decide when and which rectification action shall be taken
before further flight and which defect rectification can be deferred. However, this
does not apply when the MEL is used by the pilot or by the authorised certifying
staff.
(c) Any aircraft defect that would not hazard seriously the flight safety shall be rectified
as soon as practicable, after the date the aircraft defect was first identified and
within any limits specified in the maintenance data or the MEL.
(d) Any defect not rectified before flight shall be recorded in the M.A.305 aircraft
maintenance record system or M.A.306 operator’s technical log system as
applicable.

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SUBPART E
Components

M.A.501 Installation

(a) No component may be fitted unless it is in a satisfactory condition, has been

appropriately released to service on an CAO.IRI Form 1 or equivalent and is
marked in accordance with Part-21, Subpart Q, unless otherwise specified in Part-
21, Part-145 or Subpart F, Section A of this Part.
(b) Prior to installation of a component on an aircraft the person or approved
maintenance organisation shall ensure that the particular component is eligible to be
fitted when different modification and/or airworthiness directive configurations
may be applicable.
(c) Standard parts shall only be fitted to an aircraft or a component when the
maintenance data specifies the particular standard part. Standard parts shall only be
fitted when accompanied by evidence of conformity traceable to the applicable
standard.
(d) Material being either raw material or consumable material shall only be used on an
aircraft or a component when the aircraft or component manufacturer states so in
relevant maintenance data or as specified in Part-145. Such material shall only be
used when the material meets the required specification and has appropriate
traceability. All material must be accompanied by documentation clearly relating to
the particular material and containing conformity to specification statement plus
both the manufacturing and supplier source.

M.A.502 Component maintenance

(a) The maintenance of components shall be performed by maintenance organisations

appropriately approved in accordance with Section A, Subpart F of this Part or with
Part-145.
(b) By derogation from paragraph (a), maintenance of a component in accordance with
aircraft maintenance data or, if agreed by CAO.IRI, in accordance with component
maintenance data, may be performed by an A rated organisation approved in
accordance with Section A, Subpart F of this Part or with Part-145 as well as by
certifying staff referred to in point M.A.801 (b) 2 only whilst such components are
fitted to the aircraft. Nevertheless, such organisation or certifying staff may
temporarily remove this component for maintenance, in order to improve access to
the component, except when such removal generates the need for additional
maintenance not eligible for the provisions of this paragraph. Component
maintenance performed in accordance with this paragraph is not eligible for the
issuance of a CAO.IRI Form 1

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and shall be subject to the aircraft release requirements provided for in point
M.A.801.
(c) By derogation from paragraph (a), maintenance of an engine/Auxiliary Power Unit
(APU) component in accordance with engine/APU maintenance data or, if agreed
by CAO.IRI, in accordance with component maintenance data, may be performed
by a B rated organisation approved in accordance with Section A, Subpart F of this
Part or with Part-145 only whilst such components are fitted to the engine/APU.
Nevertheless, such B rated organisation may temporarily remove this component
for maintenance, in order to improve access to the component, except when such
removal generates the need for additional maintenance not eligible for the
provisions of this paragraph.
(d) By derogation from paragraph (a) and point M.A.801(b)2, maintenance of a
component while installed or temporarily removed from an ILA1 aircraft not used
in commercial air transport and performed in accordance with component
maintenance data, may be performed by certifying staff referred to in point
M.A.801(b)2, except for:
(1) Overhaul of components other than engines and propellers, and;
(2) Overhaul of engines and propellers for aircraft other than CS-VLA, CS-22 and
LSA. Component maintenance performed in accordance with paragraph (d) is
not eligible for the issuance of a CAO.IRI Form 1 and shall be subject to the
aircraft release requirements provided for in point M.A.801.

M.A.503 Service life limited components

(a) Installed service life limited components shall not exceed the approved service life
limit as specified in the approved maintenance programme and airworthiness
directives, except as provided for in point M.A.504(c).
(b) The approved service life is expressed in calendar time, flight hours, landings or
cycles, as appropriate.
(c) At the end the approved service life, the component must be removed from the
aircraft for maintenance, or for disposal in the case of components with a certified
life limit.

M.A.504 Control of unserviceable components

(a) A component shall be considered unserviceable in any one of the following

circumstances:
(1) Expiry of the service life limit as defined in the maintenance program;
(2) Non-compliance with the applicable airworthiness directives and other
continued airworthiness requirements mandated by CAO.IRI;
(3) Absence of the necessary information to determine the airworthiness status or
eligibility for installation;

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(4) Evidence of defects or malfunctions;

(5) Involvement in an incident or accident likely to affect its serviceability.
Unserviceable components shall be identified and stored in a secure location under
the control of an approved maintenance organisation until a decision is made on the
future status of such component. Nevertheless, for aircraft not used in commercial
air transport other than large aircraft, the person or organisation that declared the
component unserviceable may transfer its custody, after identifying it as
unserviceable, to the aircraft owner provided that such transfer is reflected in the
aircraft logbook or engine logbook or component logbook.
Components which have reached their certified life limit or contain a non-
repairable defect shall be classified as unsalvageable and shall not be permitted to
re-enter the component supply system, unless certified life limits have been
extended or a repair solution has been approved according to M.A.304.
Any person or organisation accountable under Part-M shall, in the case of a
paragraph (c) unsalvageable components:
(1) Retain such component in the paragraph (b) location, or;
(2) Arrange for the component to be mutilated in a manner that ensures that it is
beyond economic salvage or repair before relinquishing responsibility for such
component.
Notwithstanding paragraph (d) a person or organisation accountable under Part-M
may transfer responsibility of components classified as unsalvageable to an
organisation for training or research without mutilation.

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SUBPART F
Maintenance Organisation

M.A.601 Scope

This Subpart establishes the requirements to be met by an organisation to qualify for the
issue or continuation of an approval for the maintenance of aircraft other than complex
motor powered aircraft and components to be installed therein not used by commercial air
transport (AOC holder).

M.A.602 Application

An application for issue or change of a maintenance organisation approval shall be made

on CAO.IRI Form 2.a and submitted to the CAO.IRI.

M.A.603 Extent of approval

(a) An organisation involved in activities subject to this Subpart shall not exercise its
activities unless approved by CAO.IRI. Appendix V of this Part provides the
template certificate for this approval.
(b) The maintenance organisation’s manual referred to in point M.A.604 shall specify
the scope of work deemed to constitute approval. Appendix IV to Part-M defines all
classes and ratings possible under Subpart F.
(c) An approved maintenance organisation may fabricate, in conformity with
maintenance data, a restricted range of parts for the use in the course of undergoing
work within its own facilities, as identified in the maintenance organisation manual.

M.A.604 Maintenance organisation manual

(a) The maintenance organisation shall provide a manual containing at least the
following information:
(1) A statement signed by the accountable manager to confirm that the organisation
will continuously work in accordance with Part-M and the manual at all times,
and;
(2) The organisation’s scope of work, and;
(3) The title(s) and name(s) of person(s) referred to in M.A.606 (b), and;
(4) An organisation chart showing associated chains of responsibility between the
person(s) referred to in M.A.606 (b), and;
(5) A list of certifying staff with their scope of approval, and;

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(6) A list of locations where maintenance is carried out, together with a general
description of the facilities,
(7) Procedures specifying how the maintenance organisation ensures compliance
with this Part, and;
(8) The maintenance organisation manual amendment procedure(s).

The maintenance organisation manual and its amendments shall be approved by

CAO.IRI.
Notwithstanding paragraph (b) minor amendments to the manual may be approved
through a procedure (hereinafter called indirect approval).

M.A.605 Facilities

The organisation shall ensure that:

(a) Facilities are provided for all planned work, specialized workshops and bays are
segregated as appropriate, to ensure protection from contamination and the
environment.
(b) Office accommodation is provided for the management of all planned work
including in particular, the completion of maintenance records.
(c) Secure storage facilities are provided for components, equipment, tools and
material. Storage conditions shall ensure segregation of unserviceable components
and material from all other components, material, equipment and tools. Storage
conditions shall be in accordance with the manufacturers’ instructions and access
shall be restricted to authorized personnel.

M.A.606 Personnel requirements

(a) The organisation shall appoint an accountable manager, who has corporate authority
for ensuring that all maintenance required by the customer can be financed and
carried out to the standard required by this Part.
(b) A person or group of persons shall be nominated with the responsibility of ensuring
that the organisation is always in compliance with this Subpart. Such person(s)
shall be ultimately responsible to the accountable manager.
(c) All paragraph (b) persons shall be able to show relevant knowledge, background
and appropriate experience related to aircraft and/or component maintenance.
(d) The organisation shall have appropriate staff for the normal expected contracted
work. The use of temporarily subcontracted staff is permitted in the case of higher
than normally expected contracted work and only for personnel not issuing a
certificate of release to service.

(e) The qualification of all personnel involved in maintenance shall be demonstrated

and recorded.

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(f) Personnel who carry out specialized tasks such as welding, non-destructive
testing/inspection other than colour contrast shall be qualified in accordance with
Part-66 or with an officially recognized standard.
(g) The maintenance organisation shall have sufficient certifying staff to issue M.A.612
and M.A.613 certificates of release to service for aircraft and components. They
shall comply with the requirements of Article 5 of continuing airworthiness
requirement.
(h) By derogation from paragraph (g), the organisation may use certifying staff
qualified in accordance with the following provisions when providing maintenance
support to operators involved in commercial operations, subject to appropriate
procedures to be approved as part of the organisation’s manual:
(1) For a repetitive preflight airworthiness directive which specifically states that
the flight crew may carry out such airworthiness directive, the organisation may
issue a limited certifying staff authorization to the aircraft commander on the
basis of the flight crew license held, provided that the organisation ensures that
sufficient practical training has been carried out to ensure that such person can
accomplish the airworthiness directive to the required standard;
(2) In the case of aircraft operating away from a supported location, the
organisation may issue a limited certifying staff authorization to the aircraft
commander on the basis of the flight crew license, provided that the organisation
ensures that sufficient practical training has been carried out to ensure that such
person can accomplish the task to the required standard.
(3) Component certifying staff shall comply with Appendix VII of CAO.IRI Part-
145.
(4) Certifying staff for aircraft other than helicopter and aeroplane shall have basic
B1, B2 as appropriate and 3 years' experience on relevant aircraft and authorized
by organisation.

M.A.607 Certifying staff

(a) In addition to M.A.606 (g), certifying staff can only exercise their privileges, if the
organisation has ensured:
(1) That certifying staff can demonstrate that they meet the requirements of point
66.A.20(b) of Part-66, except when Part-66 refers to other regulation, in which
case they shall meet the requirement of such regulation, and;
(2) That certifying staff have an adequate understanding of the relevant aircraft
and/or aircraft component(s) to be maintained together with the associated
organisation procedures.
In the following unforeseen cases, where an aircraft is grounded at a location other
than the main base where no appropriate certifying staff is available, the
maintenance organisation contracted to provide maintenance support may issue a
one-off certification authorization:
(1) to one of its employees holding type qualifications on aircraft of similar
technology, construction and systems; or

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(2) To any person with not less than three years maintenance experience and
holding a valid ICAO aircraft maintenance license rated for the aircraft type
requiring certification provided there is no organisation appropriately approved
under this Part at that location and the contracted organisation obtains and holds
on file evidence of the experience and the license of that person.
All such cases must be reported to the CAO.IRI within seven days of the issuance
of such certification authorization. The approved maintenance organisation issuing
the one-off certification authorization shall ensure that any such maintenance that
could affect flight safety is rechecked.

The approved maintenance organisation shall record all details concerning

certifying staff and maintain a current list of all certifying staff together with their
scope of approval as part of the organisation’s manual pursuant to point M.A.604
(a) 5.

M.A.608 Components, equipment and tools

(a) The organisation shall:

(1) Hold the equipment and tools specified in the maintenance data described in
point M.A.609 or verified equivalents as listed in the maintenance organisation
manual as necessary for day-to-day maintenance within the scope of the
approval; and,
(2) Demonstrate that it has access to all other equipment and tools used only on an
occasional basis.
Tools and equipment shall be controlled and calibrated to an officially recognized
standard. Records of such calibrations and the standard used shall be kept by the
organisation.
The organisation shall inspect, classify and appropriately segregate all incoming
components.

M.A.609 Maintenance data

The approved maintenance organisation shall hold and use applicable current maintenance
data specified in M.A.401 in the performance of maintenance including modifications and
repairs. In the case of customer provided maintenance data, it is only necessary to have
such data when the work is in progress.

M.A.610 Maintenance work orders

Before the commencement of maintenance, a written work order shall be agreed between
the organisation and the organisation requesting maintenance to clearly establish the
maintenance to be carried out.

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M.A.611 Maintenance standards

All maintenance shall be carried out in accordance with the requirements of M.A. Subpart
D.

M.A.612 Aircraft certificate of release to service

At the completion of all required aircraft maintenance in accordance with this Subpart an
aircraft certificate of release to service shall be issued according to M.A.801.

M.A.613 Component certificate of release to service

(a) At the completion of all required component maintenance in accordance with this
Subpart, a component certificate of release to service shall be issued in accordance
with point M.A.802. CAO.IRI Form 1 shall be issued except for those components
maintained in accordance with points M.A.502 (b) and M.A.502 (d) and
components fabricated in accordance with point M.A.603 (b).

(b) The component certificate release to service document, CAO.IRI Form 1 may be
generated from a computer database.

M.A.614 Maintenance records

(a) The approved maintenance organisation shall record all details of work carried out.
Records necessary to prove all requirements have been met for issuance of the
certificate of release to service including the subcontractor’s release documents
shall be retained.

(b) The approved maintenance organisation shall provide a copy of each certificate of
release to service to the aircraft owner, together with a copy of any specific approved
repair/modification data used for repairs/modifications carried out.

(c) The approved maintenance organisation shall retain a copy of all maintenance records
and any associated maintenance data for three years from the date the aircraft or
aircraft component to which the work relates was released from the approved
maintenance organisation.

(1) The records under this paragraph shall be stored in a manner that ensures
protection from damage, alteration and theft.
(2) All computer hardware used to ensure backup shall be stored in a different
location from that containing the working data in an environment that ensures
they remain in good condition.
(3) Where an approved maintenance organisation terminates its operation, all
retained maintenance records covering the last three years shall be distributed to
the last owner or customer of the respective aircraft or component or shall be
stored as specified by CAO.IRI.

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M.A.615 Privileges of the organisation

The maintenance organisation approved in accordance with Section A, Subpart F of this

Part, may:

(a) Maintain any aircraft and/or component for which it is approved at the locations
specified in the approval certificate and the maintenance organisation manual;
(b) arrange for the performance of specialized services under the control of the
maintenance organisation at another organisation appropriately qualified, subject to
appropriate procedures being established as part of the Maintenance Organisation
Manual approved by CAO.IRI directly;
(c) maintain any aircraft and/or component for which it is approved at any location
subject to the need of such maintenance arising either from the unserviceability of
the aircraft or from the necessity of supporting occasional maintenance, subject to the
conditions specified in the Maintenance Organisation Manual;
(d) Issue certificates of release to service on completion of maintenance, in accordance
with point M.A.612 or point M.A.613.
Rebuild or restorative of aircraft provided that compliance to Appendix X of
CAO.IRI Part-145.

M.A.616 Organisational review

To ensure that the approved maintenance organisation continues to meet the requirements
of this Subpart, it shall organise, on a regular basis, organisational reviews.

M.A.617 Changes to the approved maintenance organisation

In order to enable the CAO.IRI to determine continued compliance with this Part, the
approved maintenance organisation shall notify it of any proposal to carry out any of the
following changes, before such changes take place:

(1) The name of the organisation

(2) The location of the organisation;

(3) Additional locations of the organisation;

(4) The accountable manager;
(5) Any of the persons specified in paragraph M.A.606 (b);
(6) The facilities, equipment, tools, material, procedures, work scope and certifying
staff that could affect the approval.
In the case of proposed changes in personnel not known to the management
beforehand, these changes shall be notified at the earliest opportunity.

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M.A.618 Continued validity of approval

(a) An approval shall be issued for a limited duration not exceeding one year. It shall
remain valid subject to:
(1) the organisation remaining in compliance with this Part, in accordance with the
provisions related to the handling of findings as specified under M.A.619, and;
(2) CAO.IRI being granted access to the organisation to determine continued
compliance with this Part, and;
(3) The approval not being surrendered or revoked;
(b) Upon surrender or revocation, the approval certificate shall be returned to the
CAO.IRI.

M.A.619 Findings
(a) A level 1 finding is any significant non-compliance with Part-M requirements
which lowers the safety standard and hazards seriously the flight safety.
(b) A level 2 finding is any non-compliance with the Part-M requirements which could
lower the safety standard and possibly hazard the flight safety.
(c) After receipt of notification of findings according to M.B.605, the holder of the
maintenance organisation approval shall define a corrective action plan and
demonstrate corrective action to the satisfaction of CAO.IRI within a period agreed
with this authority.

M.A.620 Maintenance personnel duty time limitations

The organisation shall establish procedures to ensure that a technical person (such as
mechanic, certifying staff, support staff, specialized service staff, planners) is relieved
from duty for:
(a) A period of at least 8 consecutive hours in the 24-hour period immediately before
exercising the authorization; and

(b) At least 4 periods of at least 24 consecutive hours each in the 30-day period
immediately before exercising the authorization.

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SUBPART G
Continuing Airworthiness Management Organisation

M.A.701 Scope

This Subpart establishes the requirements to be met by an organisation to qualify for the
issue or continuation of an approval for the management of aircraft continuing
airworthiness.

M.A.702 Application

An application for issue or change of a continuing airworthiness management

organisation approval shall be made on a form and in a manner established by CAO.IRI.

M.A.703 Extent of approval

The approval is indicated on a certificate included in issued by CAO.IRI.

Notwithstanding paragraph (a), for commercial air transport, the approval shall be
part of the air operator certificate issued by CAO.IRI, for the aircraft operated.
The scope of work deemed to constitute the approval shall be specified in the
continuing airworthiness management exposition in accordance with point
M.A.704.

M.A.704 Continuing airworthiness management exposition

The continuing airworthiness management organisation shall provide a continuing

airworthiness management exposition containing the following information:
(1) a statement signed by the accountable manager to confirm that the organisation
will work in accordance with this Part and the exposition at all times, and;
(2) The organisation’s scope of work, and;
(3) the title(s) and name(s) of person(s) referred to in points M.A.706(a),
M.A.706(c), M.A.706(d) and M.A.706(i);
(4) an organisation chart showing associated chains of responsibility between all
the person(s) referred to in points M.A.706(a), M.A.706(c), M.A.706(d) and
M.A.706(i);
(5) A list of the airworthiness staff referred to in point M.A.707, specifying, where
applicable, the staff authorized to issue permits to fly in accordance with point
M.A.711(c);
(6) A general description and location of the facilities, and;

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(7) Procedures specifying how the continuing airworthiness management

organisation ensures compliance with this Part, and;
(8) The continuing airworthiness management exposition amendment procedures.
(9) The list of approved aircraft maintenance programmes, or, for aircraft not
involved in commercial air transport, the list of “generic” and “baseline”
maintenance programmers.
The continuing airworthiness management exposition and its amendments shall be
approved by CAO.IRI.
Notwithstanding paragraph (b), minor amendments to the exposition may be
approved indirectly through an indirect approval procedure. The indirect approval
procedure shall define the minor amendment eligible, be established by the
continuing airworthiness management organisation as part of the exposition and be
approved by CAO.IRI.

M.A.705 Facilities

The continuing airworthiness management organisation shall provide suitable office

accommodation at appropriate locations for the personnel specified in M.A.706.

M.A.706 Personnel requirements

The organisation shall appoint an accountable manager, who has corporate

authority for ensuring that all continuing airworthiness management activities can
be financed and carried out in accordance with this Part.
For commercial air transport the paragraph (a) accountable manager shall be the
person who also has corporate authority for ensuring that all the operations of the
operator can be financed and carried out to the standard required for the issue of an
air operator’s certificate.
A person or group of persons shall be nominated with the responsibility of ensuring
that the organisation is always in compliance with this Subpart. Such person(s)
shall be ultimately responsible to the accountable manager.
For commercial air transport, the accountable manager shall designate a nominated
post holder. This person shall be responsible for the management and supervision
of continuing airworthiness activities, pursuant to paragraph (c).
The nominated post holder referred to in paragraph (d) shall not be employed by a
Part-145 approved organisation under contract to the operator, unless specifically
agreed by CAO.IRI
The organisation shall have sufficient appropriately qualified staff for the expected
work.
All paragraph (c) and (d) persons shall be able to show relevant knowledge,
background and appropriate experience related to aircraft continuing airworthiness.

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The qualification of all personnel involved in continuing airworthiness

management shall be recorded.
For organisations extending airworthiness review certificates in accordance with
points M.A.711 (a) 4 and M.A.901 (f), the organisation shall nominate persons
authorized to do so, subject to approval by CAO.IRI.
The organisation shall define and keep updated in the continuing airworthiness
management exposition the title(s) and name(s) of person(s) referred to in points
M.A.706 (a), M.A.706(c), M.A.706 (d) and M.A.706 (i).
For all complex motor-powered aircraft and for aircraft used for commercial air
transport(AOC holder), the organisation shall establish and control the competence
of personnel involved in the continuing airworthiness management, airworthiness
review and/or quality audits in accordance with a procedure and to a standard
agreed by CAO.IRI

M.A.707 Airworthiness review staff

To be approved to carry out airworthiness reviews and, if applicable, to issue

permits to fly, an approved continuing airworthiness management organisation shall
have appropriate airworthiness review staff to issue airworthiness review
certificates or recommendations referred to in Section A of Subpart I and, if
applicable, to issue a permit to fly in accordance with point M.A.711(c):
(1) for all aircraft used in commercial air transport (AOC holder), and aircraft
above 2730 kg MTOM, except balloons, these staff shall have acquired:
(i) At least five years’ experience in continuing airworthiness, and
(ii) An appropriate license in compliance with Part-66 or an aeronautical degree
or a national equivalent; and
(iii) Formal aeronautical maintenance training; and
(iv) A position within the approved organisation with appropriate
responsibilities.
(v) Notwithstanding points (i) to (iv), the requirement laid down in point
M.A.707(a)1(ii) may be replaced by five years of experience in continuing
airworthiness additional to those already required by point M.A.707(a)1(i).
(2) For aircraft not used in commercial air transport (AOC holder) of 2730 kg
MTOM and below, and balloons, these staff shall have acquired:
(i) At least three years' experience in continuing airworthiness; and
(ii) An appropriate license in compliance with Part-66 or an aeronautical degree
or a national equivalent; and
(iii) Appropriate aeronautical maintenance training; and
(iv) A position within the approved organisation with appropriate
responsibilities;

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(v) Notwithstanding points (i) to (iv), the requirement laid down in point
M.A.707(a)2(ii) may be replaced by four years of experience in continuing
airworthiness additional to those already required by point M.A.707(a)2(i).
Airworthiness review staff nominated by the approved continuing airworthiness
organisation can only be issued an authorization by the approved continuing
airworthiness organisation when formally accepted by CAO.IRI after satisfactory
completion of an airworthiness review under supervision.
The organisation shall ensure that aircraft airworthiness review staff can
demonstrate appropriate recent continuing airworthiness management experience.
Airworthiness review staff shall be identified by listing each person in the
continuing airworthiness management exposition together with their airworthiness
review authorization reference.
The organisation shall maintain a record of all airworthiness review staff, which
shall include details of any appropriate qualification held together with a summary
of relevant continuing airworthiness management experience and training and a
copy of the authorization. This record shall be retained until two years after the
airworthiness review staff have left the organisation.

M.A.708 Continuing airworthiness management

All continuing airworthiness management shall be carried out according to the

prescriptions of M.A Subpart C.
For every aircraft managed, the approved continuing airworthiness management
organisation shall:
(1) Develop and control a maintenance programme for the aircraft managed
including any applicable reliability programme,
(2) Present the aircraft maintenance programme and its amendments to CAO.IRI
for approval, unless covered by an indirect approval procedure in accordance
with point M.A.302(c), and provide a copy of the programme to the owner of
aircraft not involved in commercial air transport,
(3) Manage the approval of modification and repairs,
(4) Ensure that all maintenance is carried out in accordance with the approved
maintenance programme and released in accordance with M.A. Subpart H,
(5) Ensure that all applicable airworthiness directives and operational directives
with a continuing airworthiness impact, are applied,
(6) Ensure that all defects discovered during scheduled maintenance or reported are
corrected by an appropriately approved maintenance organisation,
(7) Ensure that the aircraft is taken to an appropriately approved maintenance
organisation whenever necessary,

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(8) Coordinate scheduled maintenance, the application of airworthiness directives,

the replacement of service life limited parts, and component inspection to ensure
the work is carried out properly,
(9) Manage and archive all continuing airworthiness records and/or operator’s
technical log.
(10) Ensure that the mass and balance statement reflects the current status of the
aircraft.
In the case of complex motor-powered aircraft or commercial air transport(AOC
holder) or aircraft used for commercial specialised operations or commercial ATO
operations, when the operator is not appropriately approved to Part-145 or Part-
M.A. Subpart-F, the operator shall establish a written maintenance contract
between the operator and a Part-145 or Part-M.A. Subpart-F, approved organisation
or another operator, detailing the functions specified under M.A.301-2, M.A.301-3,
M.A.301-5 and M.A.301-6, ensuring that all maintenance is ultimately carried out
by a Part-145 or Part-M.A. Subpart-F approved maintenance organisation and
defining the support of the quality functions of M.A.712(b).
Notwithstanding point (c), the contract may be in the form of individual work
orders addressed to the Part-145 or Part-M.A. Subpart-F maintenance organisation
in the case of:
(1) an aircraft requiring unscheduled line maintenance,
(2) component maintenance, including engine maintenance.

M.A.709 Documentation

The approved continuing airworthiness management organisation shall hold and

use applicable current maintenance data in accordance with point M.A.401 for the
performance of continuing airworthiness tasks referred to in point M.A.708. This
data may be provided by the owner or the operator, subject to an appropriate
contract being established with such an owner or operator. In such case, the
continuing airworthiness management organisation only needs to keep such data for
the duration of the contract, except when required by point M.A.714.
For aircraft not involved in commercial air transport(AOC holder), the approved
continuing airworthiness management organisation may develop “baseline” and/or
“generic” maintenance programmes in order to allow for the initial approval and/or
the extension of the scope of an approval without having the contracts referred to in
Appendix I to this Part. These “baseline” and/or “generic” maintenance
programmes however do not preclude the need to establish an adequate Aircraft
Maintenance Programme in compliance with point M.A.302 in due time before
exercising the privileges referred to in point M.A.711.

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M.A.710 Airworthiness review

To satisfy the requirement for the airworthiness review of an aircraft referred to in

point M.A.901, a full documented review of the aircraft records shall be carried out
by the approved continuing airworthiness management organisation in order to be
satisfied that:
(1) Airframe, engine and propeller flying hours and associated flight cycles have
been properly recorded; and
(2) The flight manual is applicable to the aircraft configuration and reflects the
latest revision status; and
(3) All the maintenance due on the aircraft according to the approved maintenance
programmed has been carried out; and
(4) All known defects have been corrected or, when applicable, carried forward in a
controlled manner; and
(5) All applicable airworthiness directives have been applied and properly
registered; and
(6) All modifications and repairs applied to the aircraft have been registered and are
approved according to Part-21; and
(7) All service life limited components installed on the aircraft are properly
identified, registered and have not exceeded their approved service life limit;
and
(8) All maintenance has been released in accordance with this Part; and
(9) The current mass and balance statement reflects the configuration of the aircraft
and is valid; and
(10) The aircraft complies with the latest revision of its type design approved; and
(11) If required, the aircraft holds a noise certificate corresponding to the current
configuration of the aircraft in compliance with Subpart I of the Part-21.
The airworthiness review staff of the approved continuing airworthiness
management organisation shall carry out a physical survey of the aircraft. For this
survey, airworthiness review staff not appropriately qualified to Part-66 shall be
assisted by such qualified personnel.
Through the physical survey of the aircraft, the airworthiness review staff shall
ensure that:
(1) All required markings and placards are properly installed; and
(2) The aircraft complies with its approved flight manual; and
(3) The aircraft configuration complies with the approved documentation; and
(4) No evident defect can be found that has not been addressed according to point
M.A.403; and

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(5) No inconsistencies can be found between the aircraft and the paragraph (a)
documented review of records.
By derogation to point M.A.901 (a), the airworthiness review can be anticipated by
a maximum period of 90 days without loss of continuity of the airworthiness review
pattern, to allow the physical review to take place during a maintenance check.
The airworthiness review certificate (CAO.IRI Form 15b) or the recommendation
for the issue of the airworthiness review certificate (CAO.IRI Form 15a) referred to
in Appendix III to this Part can only be issued:
(1) By airworthiness review staff appropriately authorized in accordance with point
M.A.707 on behalf of the approved continuing airworthiness management
organisation or by certifying staff in cases provided for in point M.A.901(g); and
(2) When satisfied that the airworthiness review has been completely carried out
and that there is no non-compliance which is known to endanger flight safety.
A copy of any airworthiness review certificate issued or extended for an aircraft
shall be sent to CAO.IRI of that aircraft within 10 days.
Airworthiness review tasks shall not be sub-contracted.
Should the outcome of the airworthiness review be inconclusive, CAO.IRI shall be
informed as soon as practicable but in any case within 72 hours of the organisation
identifying the condition to which the review relates.

M.A.711 Privileges of the organisation

A continuing airworthiness management organisation approved in accordance with

Section A, Subpart G of this Part may:
(1) Manage the continuing airworthiness of aircraft, except those involved in
commercial air transport (AOC holder), as listed on the approval certificate.
(2) Manage the continuing airworthiness of commercial air transport(AOC holder)
aircraft when listed both on its approval certificate and on its Air Operator
Certificate (AOC);
(3) Arrange to carry out limited continuing airworthiness tasks with any contracted
organisation, working under its quality system, as listed on the approval
certificate;
(4) Extend, under the conditions of point M.A.901 (f), an airworthiness review
certificate that has been issued by CAO.IRI or by another continuing
airworthiness management organisation approved in accordance with Section A,
Subpart G of this Part;
An approved continuing airworthiness management organisation registered in
IRAN may, additionally, be approved to carry out airworthiness reviews referred to
in point M.A.710 and:

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(1) Issue the related airworthiness review certificate and extend it in due time under
the conditions of points M.A.901(c)2 or M.A.901(e)2; and,
(2) Issue a recommendation for the airworthiness review to CAO.IRI
A continuing airworthiness management organisation whose approval includes the
privileges referred to in point M.A.711(b) may additionally be approved to issue a
permit to fly in accordance with Part-21A.711(d) of the Part-21 for the particular
aircraft for which the organisation is approved to issue the airworthiness review
certificate, when the continuing airworthiness management organisation is attesting
conformity with approved flight conditions, subject to an adequate approved
procedure in the exposition referred to in point M.A.704.

M.A.712 Quality system

To ensure that the approved continuing airworthiness management organisation

continues to meet the requirements of this Subpart, it shall establish a quality system
and designate a quality manager to monitor compliance with, and the adequacy of,
procedures required to ensure airworthy aircraft. Compliance monitoring shall
include a feedback system to the accountable manager to ensure corrective action as
necessary.
The quality system shall monitor M.A. Subpart G activities. It shall at least include
the following functions:
(1) Monitoring that all M.A. Subpart G activities are being performed in
accordance with the approved procedures, and;
(2) Monitoring that all contracted maintenance is carried out in accordance with the
contract, and;
(3) monitoring the continued compliance with the requirements of this Part.

The records of these activities shall be stored for at least two years.
Where the approved continuing airworthiness management organisation is
approved in accordance with another Part, the quality system may be combined
with that required by the other Part.
In case of commercial air transport (AOC holder), the M.A. Subpart G quality
system shall be an integrated part of the operator’s quality system.
In the case of a small organisation not managing the continuing airworthiness of
aircraft used in commercial air transport(AOC holder), the quality system may be
replaced by regular organisational reviews subject to the approval of the CAO.IRI,
except when the organisation issues airworthiness review certificates for aircraft
above 2730 kg MTOM other than balloons. In the case where there is no quality
system, the organisation shall not contract continuing airworthiness management
tasks to other parties.

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M.A.713 Changes to the approved continuing airworthiness organisation

In order to enable CAO.IRI to determine continued compliance with this Part, the
approved continuing airworthiness management organisation shall notify it of any
proposal to carry out any of the following changes, before such changes take place:

(1) The name of the organisation.

(2) The location of the organisation.
(3) Additional locations of the organisation.
(4) The accountable manager.
(5) Any of the persons specified in M.A.706(c).
(6) The facilities, procedures, work scope and staff that could affect the approval.
In the case of proposed changes in personnel not known to the management beforehand,
these changes shall be notified at the earliest opportunity.

M.A.714 Record-keeping

The continuing airworthiness management organisation shall record all details of

work carried out. The records required by M.A.305 and if applicable M.A.306 shall
be retained.
If the continuing airworthiness management organisation has the privilege referred
to in point M.A.711 (b), it shall retain a copy of each airworthiness review
certificate and recommendation issued or, as applicable, extended, together with all
supporting documents. In addition, the organisation shall retain a copy of any
airworthiness review certificate that it has extended under the privilege referred to
in point M.A.711 (a) 4.
If the continuing airworthiness management organisation has the privilege referred
to in point M.A.711(c), it shall retain a copy of each permit to fly issued in
accordance with the provisions of point 21A.729 of the Part-21.
The continuing airworthiness management organisation shall retain a copy of all
records referred to in paragraphs (b) and (c) until two years after the aircraft has
been permanently withdrawn from service.
The records shall be stored in a manner that ensures protection from damage,
alteration and theft.
All computer hardware used to ensure backup shall be stored in a different location
from that containing the working data in an environment that ensures they remain
in good condition.
Where continuing airworthiness management of an aircraft is transferred to another
organisation or person, all retained records shall be transferred to the said
organisation or person. The time periods prescribed for the retention of records
shall continue to apply to the said organisation or person.

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Where a continuing airworthiness management organisation terminates its

operation, all retained records shall be transferred to the owner of the aircraft.

M.A.715 Continued validity of approval

An approval shall be issued for a limited duration not exceeding one year. It shall
remain valid subject to:
(1) the organisation remaining in compliance with this Part, in accordance with the
provisions related to the handling of findings as specified under M.B.705 and;
(2) CAO.IRI being granted access to the organisation to determine continued
compliance with this Part, and;
(3) The approval not being surrendered or revoked.
Upon surrender or revocation, the approval certificate shall be returned to CAO.IRI

M.A.716 Findings

A level 1 finding is any significant non-compliance with Part-M requirements

which lowers the safety standard and hazards seriously the flight safety.
A level 2 finding is any non-compliance with the Part-M requirements which could
lower the safety standard and possibly hazard the flight safety.
After receipt of notification of findings according to M.B.705, the holder of the
continuing airworthiness management organisation approval shall define a
corrective action plan and demonstrate corrective action to the satisfaction of the
CAO.IRI Within a period agreed with this authority.

SUBPART H
Certificate of Release to Service – CRS

M.A.801 Aircraft certificate of release to service

Except for aircraft released to service by a maintenance organisation approved in

accordance with Part-145, the certificate of release to service shall be issued
according to this Subpart;
No aircraft can be released to service unless a certificate of release to service is
issued at the completion of any maintenance, when satisfied that all maintenance
required has been properly carried out, by:
(1) Appropriate certifying staff on behalf of the maintenance organisation approved
in accordance with Section A, Subpart F of this Part; or

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(2) Certifying staff in compliance with the requirements laid down in Part-66,
except for complex maintenance tasks listed in Appendix VII to this Part for
which point 1 applies; or
(3) By the Pilot-owner in compliance with point M.A.803;
By derogation from point M.A.801(b)2 for ILA1 aircraft not used in CAT or not
used in commercial specialised operations or not used in commercial ATO
operations, aircraft complex maintenance tasks listed in Appendix VII may be
released by certifying staff referred to in point M.A.801(b)2;
By derogation from point M.A.801(b), in the case of unforeseen situations, when
an aircraft is grounded at a location where no approved maintenance organisation
appropriately approved under this Part or Part-145 and no appropriate certifying
staff are available, the owner may authorize any person, with not less than three
years of appropriate maintenance experience and holding the proper qualifications,
to maintain according to the standards set out in Subpart D of this Part and release
the aircraft. The owner shall in that case:
(1) Obtain and keep in the aircraft records details of all the work carried out and of
the qualifications held by that person issuing the certification; and
(2) Ensure that any such maintenance is rechecked and released by an appropriately
authorized person referred to in point M.A.801(b) or an organisation approved
in accordance with Section A, Subpart F of this Part, or Part-145 at the earliest
opportunity but within a period not exceeding seven days; and
(3) Notify the organisation responsible for the continuing airworthiness
management of the aircraft when contracted in accordance with point M.A.201
(i), or CAO.IRI in the absence of such a contract, within seven days of the
issuance of such certification authorization;
In the case of a release to service in accordance with point M.A.801(b)2 or point
M.A.801(c), the certifying staff may be assisted in the execution of the maintenance
tasks by one or more persons subject to his/her direct and continuous control;
A certificate of release to service shall contain as a minimum:
(1) Basic details of the maintenance carried out; and
(2) The date such maintenance was completed; and
(3) The identity of the organisation and/or person issuing the release to service,
including:
(i) the approval reference of the maintenance organisation approved in
accordance with Section A, Subpart F of this Part and the certifying staff
issuing such a certificate; or
(ii) In the case of point M.A.801 (b) 2 or M.A.801(c) certificate of release to
service, the identity and if applicable license number of the certifying staff
issuing such a certificate;

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(4) The limitations to airworthiness or operations, if any.

By derogation from paragraph (b) and notwithstanding the provisions of paragraph
(h), when the maintenance prescribed cannot be completed, a certificate of release
to service may be issued within the approved aircraft limitations. Such fact together
with any applicable limitations of the airworthiness or the operations shall be
entered in the aircraft certificate of release to service before its issue as part of the
information required in paragraph (f) 4;
A certificate of release to service shall not be issued in the case of any known non-
compliance which endangers flight safety.

M.A.802 Component certificate of release to service

A certificate of release to service shall be issued at the completion of any

maintenance carried out on an aircraft component in accordance with point
M.A.502.
The authorized release certificate identified as or CAO.IRI Form 1 constitutes the
component certificate of release to service, except when such maintenance on
aircraft components has been performed in accordance with point M.A.502 (b) or
point M.A.502 (d), in which case the maintenance is subject to aircraft release
procedures in accordance with point M.A.801.

M.A.803 Pilot-owner authorization

To qualify as a Pilot-owner, the person must:

(1) Hold a valid pilot license (or equivalent) issued or validated by a CAO.IRI for
the aircraft type or class rating; and
(2) Own the aircraft, either as sole or joint owner; that owner must be:
(i) One of the natural persons on the registration form; or
(ii) A member of a non-profit recreational legal entity, where the legal entity is
specified on the registration document as owner or operator, and that member
is directly involved in the decision making process of the legal entity and
designated by that legal entity to carry out Pilot-owner maintenance.
For any non-complex motor-powered aircraft of 2730 kg MTOM and below,
sailplane, powered sailplane or balloon, that are not used in CAT, or not used
inommercial specialised operations or not used in commercial ATO operations, the
pilot-owner may issue a certificate of release to service after limited Pilot-owner
maintenance as specified in Appendix VIII.
The scope of the limited Pilot-owner maintenance shall be specified in the aircraft
maintenance programme referred to in point M.A.302.

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The certificate of release to service shall be entered in the logbooks and contain
basic details of the maintenance carried out, the maintenance data used, the date on
which that maintenance was completed and the identity, the signature and pilot
license number of the Pilot-owner issuing such a certificate.

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SUBPART I
Airworthiness Review Certificate

M.A.901 Aircraft airworthiness review

To ensure the validity of the aircraft airworthiness certificate, an airworthiness review of

the aircraft and its continuing airworthiness records shall be carried out periodically.

An airworthiness review certificate is issued in accordance with Appendix III

(CAO.IRI Form 15a or 15b) on completion of a satisfactory airworthiness review.
The airworthiness review certificate is valid for a limited duration not exceeding
one year.
An aircraft in a controlled environment is an aircraft:
(i) Continuously managed during the previous 12 months by a unique continuing
airworthiness management organisation approved in accordance with Section
A, Subpart G, of this Part, and
(ii) Which has been maintained for the previous 12 months by maintenance
organisations approved in accordance with Section A, Subpart F of Part-M,
or with Part-145. This includes maintenance tasks referred to in point
M.A.803 (b) carried out and released to service in accordance with point
M.A.801 (b) 2 or point M.A.801 (b) 3;
For all aircraft used in commercial air transport (AOC), and aircraft above 2730 kg
MTOM, except balloons, that are in a controlled environment, the organisation
referred to in (b) managing the continuing airworthiness of the aircraft may, if
appropriately approved, and subject to compliance with paragraph (k):
(1) Issue an airworthiness review certificate in accordance with point M.A.710,
and;
(2) For the airworthiness review certificates it has issued, when the aircraft has
remained within a controlled environment, extend twice the validity of the
airworthiness review certificate for a period of one year each time;
For all aircraft used in commercial air transport (AOC), and aircraft above 2730 kg
MTOM, except balloons, that
(i) are not in a controlled environment, or
(ii) which continuing airworthiness is managed by a continuing
airworthiness management organisation that does not hold the privilege
to carry out airworthiness reviews,
the airworthiness review certificate shall be issued by CAO.IRI upon satisfactory
assessment based on a recommendation made by a continuing airworthiness
management organisation appropriately approved in accordance with Section A,

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Subpart G of this Part sent together with the application from the owner or operator.
This recommendation shall be based on an airworthiness review carried out in
accordance with point M.A.710;

For aircraft not used in commercial air transport (AOC), of 2730 kg MTOM and
below, and balloons, any continuing airworthiness management organisation
approved in accordance with Section A, Subpart G of this Part and appointed by the
owner or operator may, if appropriately approved and subject to paragraph (k):
(1) Issue the airworthiness review certificate in accordance with point M.A.710,
and;
(2) For airworthiness review certificates it has issued, when the aircraft has
remained within a controlled environment under its management, extend twice
the validity of the airworthiness review certificate for a period of one year each
time;
By derogation from points M.A.901(c)2 and M.A.901(e)2, for aircraft that are in a
controlled environment, the organisation referred to in (b) managing the continuing
airworthiness of the aircraft, subject to compliance with paragraph (k), may extend
twice for a period of one year each time the validity of an airworthiness review
certificate that has been issued by CAO.IRI or by another continuing airworthiness
management organisation approved in accordance with Section A, Subpart G of this
Part;
By derogation from points M.A.901(e) and M.A.901(i)2, for ILA1 aircraft not used
in CAT or not used in commercial specialised operations or not used in commercial
ATO operations the airworthiness review certificate may also be issued by
CAO.IRI Upon satisfactory assessment, based on a recommendation made by
certifying staff formally approved by CAO.IRI and complying with provisions of
Part-66 as well as requirements laid down in point M.A.707(a)2(i), sent together
with the application from the owner or operator. This recommendation shall be
based on an airworthiness review carried out in accordance with point M.A.710 and
shall not be issued for more than two consecutive years;
Whenever circumstances reveal the existence of a potential safety threat, CAO.IRI
shall carry out the airworthiness review and issue the airworthiness review
certificate itself;
In addition to paragraph (h), CAO.IRI may also carry out the airworthiness review
and issue the airworthiness review certificate itself in the following cases:
(1) When the aircraft is managed by a continuing airworthiness management
organisation approved in accordance with Section A, Subpart G of this Part
located in another country;
(2) For all balloons and any other aircraft of 2730 kg MTOM and below, if it is
requested by the owner;

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When CAO.IRI Carries out the airworthiness review and/or issues the airworthiness
review certificate itself, the owner or operator shall provide CAO.IRI with:
(1) The documentation required by CAO.IRI; and
(2) Suitable accommodation at the appropriate location for its personnel; and
(3) When necessary, the support of personnel appropriately qualified in accordance
with Part-66 or equivalent personnel requirements laid down in point 145. A.30
(j) (1) and (2) of Part-145;
An airworthiness review certificate cannot be issued nor extended if there is
evidence or reason to believe that the aircraft is not airworthy.

M.A.902 Validity of the airworthiness review certificate

An airworthiness review certificate becomes invalid if:

(1) Suspended or revoked; or
(2) The airworthiness certificate is suspended or revoked; or
(3) The aircraft is not on the aircraft register of Iran; or
(4) The type certificate under which the airworthiness certificate was issued is
suspended or revoked.
An aircraft must not fly if the airworthiness certificate is invalid or if:
(1) The continuing airworthiness of the aircraft or any component fitted to the
aircraft does not meet the requirements of this Part, or;
(2) The aircraft does not remain in conformity with the type design approved by
CAO.IRI; or
(3) The aircraft has been operated beyond the limitations of the approved flight
manual or the airworthiness certificate, without appropriate action being taken;
or
(4) The aircraft has been involved in an accident or incident that affects the
airworthiness of the aircraft, without subsequent appropriate action to restore
airworthiness; or
(5) A modification or repair has not been approved in accordance with Part-21.
Upon surrender or revocation, the airworthiness review certificate shall be returned
to CAO.IRI

M.A.903 Reserved

M.A.904 Airworthiness review of aircraft imported into Iran

When importing an aircraft onto Iran register from another country, the applicant
shall:

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(1) Apply to the CAO.IRI for the issuance of a new airworthiness certificate in
accordance with Part-21; and
(2) For aircraft other than new, have an airworthiness review carried out
satisfactorily in accordance with point M.A.901; and
(3) Have all maintenance carried out to comply with the approved maintenance
programme in accordance with point M.A.302.
When satisfied that the aircraft is in compliance with the relevant requirements, the
continuing airworthiness management organisation, if applicable, shall send a
documented recommendation for the issuance of an airworthiness review certificate
to CAO.IRI.
The owner shall allow access to the aircraft for inspection by CAO.IRI.
A new airworthiness certificate will be issued by CAO.IRI when it is satisfied the
aircraft complies with the prescriptions of Part-21.
CAO.IRI shall also issue the airworthiness review certificate, valid normally for
one year, unless CAO.IRI has safety reason to limit the validity.

M.A.905 Findings

A level 1 finding is any significant non-compliance with Part-M requirements

which lowers the safety standard and hazards seriously the flight safety.
A level 2 finding is any non-compliance with the Part-M requirements which could
lower the safety standard and possibly hazard the flight safety.
After receipt of notification of findings according to point M.B.903, the person or
organisation accountable referred to in point M.A.201 shall define a corrective
action plan and demonstrate corrective action to the satisfaction of the CAO.IRI
within a period agreed with CAO.IRI including appropriate corrective action to
prevent reoccurrence of the finding and its root cause.

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SECTION B
Procedure for CAO.IRI

SUBPART A
GENERAL

M.B.101 Scope

This Section establishes the administrative requirements to be followed by CAO.IRI in

charge of the application and the enforcement of Section A of this Part.

M.B.102 Organisation requirements

General

CAO.IRI is the sole organisation responsible for the issuance, continuation, change,
suspension or revocation of certificates and for the oversight of continuing
airworthiness. CAO.IRI shall establish documented procedures and an
organisational structure.

Resources

The number of staff shall be appropriate to carry out the requirements as detailed in
this Section B.

Qualification and training

All staff involved in Part-M activities shall be appropriately qualified and have
appropriate knowledge, experience, initial training and continuation training to
perform their allocated tasks.

Procedures

CAO.IRI shall establish procedures detailing how compliance with this Part is
accomplished. The procedures shall be reviewed and amended to ensure continued
compliance.

The procedure for approve MEL shall be defined according Air Operation
Regulation

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M.B.103 Acceptable means of compliance

The CAO.IRI shall develop acceptable means of compliance. When the acceptable means
of compliance are complied with, the related requirements of this Part shall be considered
as met. Until such time as the CAO.IRI specifies acceptable means of compliance, the
EASA Part-M acceptable means of compliance could be applied as appropriate.

M.B.104 Record-keeping

CAO.IRI shall establish a system of record-keeping that allows adequate

traceability of the process to issue, continue, change, suspend or revoke each
certificate.
The records for the oversight of Part-M approved organisations shall include as a
minimum:
(1) The application for an organisation approval.
(2) The organisation approval certificate including any changes.
(3) A copy of the audit program listing the dates when audits are due and when
audits were carried out.
(4) CAO.IRI continued oversight records including all audit records.
(5) Copies of all relevant correspondence.
(6) Details of any exemption and enforcement actions.
(7) Any report from other authorities relating to the oversight of the organisation.
(8) Organisation exposition or manual and amendments.
(9) Copy of any other document directly approved by CAO.IRI.
The retention period for the paragraph (b) records shall be at least four years.
The minimum records for the oversight of each aircraft shall include, at least, a
copy of:
(1) Aircraft certificate of airworthiness,
(2) Airworthiness review certificates,
(3) Section A Subpart G organisation recommendations,

(4) Reports from the airworthiness reviews carried out directly by the CAO.IRI,
(5) All relevant correspondence relating to the aircraft,

(6) Details of any exemption and enforcement action(s),

(7) Any document approved by CAO.IRI pursuant to Part-M
The records specified in paragraph (d) shall be retained until ten years after the
aircraft has been permanently withdrawn from service.
Reserved
M.B.105 Reserved

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SUBPART B
Accountability

M.B.201 Responsibilities

CAO.IRI is responsible for conducting inspections and investigations in order to verify

that the requirements of this Part are complied with.

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SUBPART C
Continuing Airworthiness

M.B.301 Maintenance programme

CAO.IRI shall verify that the maintenance programme is in compliance with

M.A.302.
Except where stated otherwise in point M.A.302(c), the maintenance programme
and its amendments shall be approved directly by CAO.IRI
In the case of indirect approval, the maintenance programme procedure shall be
approved by CAO.IRI through the continuing airworthiness management
exposition.
In order to approve a maintenance programme according to paragraph (b),
CAO.IRI shall have access to all the data required in points M.A.302 (d), (e) and
(f).

M.B.302 Exemptions

In certain case flight standard may accept application for exemption to requirement
of this part, provided that appropriate justification provided by applicant.
Any exemptions shall be granted only after approval of president of Civil Aviation
Organisation of Islamic Republic of Iran.
All exemption shall be recorded and retained by CAO.IRI.

M.B.303 Aircraft continuing airworthiness monitoring

CAO.IRI shall develop a survey programme on a risk-based approach to monitor

the airworthiness status of the fleet of aircraft on its register.
The survey programme shall include sample product surveys of aircraft and shall
cover all aspects of airworthiness key risk elements.
The product survey shall sample the airworthiness standards achieved, on the basis
of the applicable requirements, and identify any findings.
Any findings identified shall be categorised against the requirements of this Part
and confirmed in writing to the person or organisation accountable according to
M.A.201. CAO.IRI shall have a process in place to analyse findings fortheir safety
significance.
CAO.IRI shall record all findings, closure actions and recommendations.

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If during aircraft surveys evidence is found showing non-compliance with this Part,
or with any other Part, the finding shall be dealt with as prescribed by the relevant
Part.
In order to facilitate appropriate enforcement action, CAO.IRI shall exchange
information on non-compliances to other states.

M.B.304 Revocation, suspension and limitation

CAO.IRI shall:

Suspend an airworthiness review certificate on reasonable grounds in the case of

potential safety threat, or;
Suspend or revoke an airworthiness review certificate pursuant to M.B.903 (1).

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SUBPART D
Maintenance Standards

(To be developed as appropriate)

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SUBPART E
Components

(To be developed as appropriate)

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SUBPART F
Maintenance Organisation

M.B.601 Application

The investigation and continuous oversight of the maintenance facilities shall be carried
out by CAO.IRI.

M.B.602 Initial Approval

Provided the requirements of M.A.606 (a) and (b) are complied with, the CAO.IRI
shall formally indicate its acceptance of the M.A.606 (a) and (b) personnel to the
applicant in writing.
CAO.IRI shall establish that the procedures specified in the maintenance
organisation manual comply with M.A Subpart F and ensure the accountable
manager signs the commitment statement.
CAO.IRI shall verify that the organisation is in compliance with the Part-M.A
Subpart F requirements.
A meeting with the accountable manager shall be convened at least once during the
investigation for approval to ensure that he/she fully understands the significance of
the approval and the reason for signing the commitment of the organisation to
compliance with the procedures specified in the manual.
All findings shall be confirmed in writing to the applicant organisation.
CAO.IRI shall record all findings, closure actions (actions required to close a
finding) and recommendations.
For initial approval all findings shall be corrected by the organisation before the
approval can be issued.

M.B.603 Issue of approval

CAO.IRI shall issue to the applicant a CAO.IRI Form 3.a approval certificate
(Appendix V) which includes the extent of approval, when the maintenance
organisation is in compliance with the applicable paragraphs of this Part.
The CAO.IRI shall indicate the conditions attached to the approval on the CAO.IRI
Form 3.a approval certificate.
The reference number shall be included on the CAO.IRI Form 3.a approval
certificate in a manner specified by CAO.IRI.

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M.B.604 Continuing oversight

The CAO.IRI shall keep and update a program listing for each M.A Subpart F
approved maintenance organisations under its supervision, the dates when audit
visits are due and when such visits were carried out.
Each organisation shall be completely audited at periods not exceeding 12 months.
All findings shall be confirmed in writing to the applicant organisation.
CAO.IRI shall record all findings, closure actions (actions required to close a
finding) and recommendations.
A meeting with the accountable manager shall be convened at least once every 12
months to ensure he/she remains informed of significant issues arising during
audits.

M.B.605 Findings

When during audits or by other means evidence is found showing non-compliance

to the Part-M requirement, the CAO.IRI shall take the following actions:
(1) For level 1 findings, immediate action shall be taken by CAO.IRI to revoke,
limit or suspend in whole or in part, depending upon the extent of the level 1
finding, the maintenance organisation approval, until successful corrective
action has been taken by the organisation.
(2) For level 2 findings, CAO.IRI shall grant a corrective action period appropriate
to the nature of the finding that shall not be more than three months. In certain
circumstances, at the end of this first period and subject to the nature of the
finding, the CAO.IRI can extend the three month period subject to a satisfactory
corrective action plan.
Action shall be taken by CAO.IRI to suspend in whole or part the approval in case
of failure to comply within the timescale granted by CAO.IRI.

M.B.606 Changes

The CAO.IRI shall comply with the applicable elements of the initial approval for
any change to the organisation notified in accordance with point M.A.617.
The CAO.IRI may prescribe the conditions under which the approved maintenance
organisation may operate during such changes, unless it determines that the
approval should be suspended due to the nature or the extent of the changes.
For any change to the maintenance organisation manual:
(1) In the case of direct approval of changes in accordance with point M.A.604 (b),
CAO.IRI shall verify that the procedures specified in the manual are in
compliance with this Part before formally notifying the approved organisation of
the approval.

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(2) In the case an indirect approval procedure is used for the approval of the
changes in accordance with point M.A.604(c), CAO.IRI shall ensure that:
(i) The changes remain minor and
(ii) It has an adequate control over the approval of the changes to ensure they
remain in compliance with the requirements of this Part.

B.607 Revocation, suspension and limitation of an approval

CAO.IRI shall:

Suspend an approval on reasonable grounds in the case of potential safety threat,

or;
Suspend, revoke or limit an approval pursuant to M.B.605.

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SUBPART G
Continuing Airworthiness Management Organisation

M.B.701 Application

For commercial air transport (AOC holder), the CAO.IRI shall receive for approval
with the initial application for the air operator’s certificate and where applicable
any variation applied for and for each aircraft type to be operated:
(1) The continuing airworthiness management exposition;
(2) The operator’s aircraft maintenance programmes;
(3) The aircraft technical log;
(4) Where appropriate the technical specification of the maintenance contracts
between the operator and Part-145 approved maintenance organisation.
Reserved.

M.B.702 Initial approval

Provided the requirements of M.A.706 (a), (c), (d) and M.A.707 are complied with,
CAO.IRI shall formally indicate its acceptance of the M.A.706 (a), (c), (d) and
M.A.707 personnel to the applicant in writing.
The CAO.IRI shall establish that the procedures specified in the continuing
airworthiness management exposition comply with Part-M.A. Subpart G and ensure
the accountable manager signs the commitment statement.
CAO.IRI shall verify the organisation’s compliance with M.A. Subpart G
requirements.
A meeting with the accountable manager shall be convened at least once during the
investigation for approval to ensure that he/she fully understands the significance of
the approval and the reason for signing the exposition commitment of the
organisation to compliance with the procedures specified in the continuing
airworthiness management exposition.
All findings shall be confirmed in writing to the applicant organisation.
CAO.IRI shall record all findings, closure actions (actions required to close a
finding) and recommendations.
For initial approval all findings shall be corrected by the organisation before the
approval can be issued.

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M.B.703 Issue of approval

CAO.IRI shall issue to the applicant a CAO.IRI Form 14 approval certificate

(Appendix VI) which includes the extent of approval, when the continuing
airworthiness management organisation is in compliance with M.A. Subpart G.
CAO.IRI shall indicate the validity of the approval on the CAO.IRI Form 14
approval certificate.
The reference number shall be included on the Form 14 approval certificate in a
manner specified by CAO.IRI.
In the case of commercial air transport (AOC holder), the information contained on
a CAO.IRI Form 14 will be included on the air operator’s certificate.

M.B.704 Continuing oversight

The CAO.IRI shall keep and update a program listing for each M.A. Subpart G
approved continuing airworthiness organisations under its supervision, the dates
when audit visits are due and when such visits were carried out.
Each organisation shall be completely audited at periods not exceeding 12 months.
A relevant sample of the aircraft managed by the M.B. Subpart G approved
organisation shall be surveyed in every 12 month period. The size of the sample
will be decided by CAO.IRI based on the result of prior audits and earlier product
surveys.
All findings shall be confirmed in writing to the applicant organisation.
CAO.IRI shall record all findings, closure actions (actions required to close a
finding) and recommendations.
A meeting with the accountable manager shall be convened at least once every 24
months to ensure he/she remains informed of significant issues arising during
audits.

M.B.705 Findings

When during audits or by other means evidence is found showing non-compliance

to the Part-M requirement, the CAO.IRI shall take the following actions:
(1) For level 1 findings, immediate action shall be taken by CAO.IRI to revoke,
limit or suspend in whole or in part, depending upon the extent of the level 1
finding, the continuing airworthiness management organisation approval, until
successful corrective action has been taken by the organisation.
(2) For level 2 findings, CAO.IRI shall grant a corrective action period appropriate
to the nature of the finding that shall not be more than three months. In certain
circumstances, at the end of this first period, and subject to the nature of the
finding the CAO.IRI can extend the three month period subject to a satisfactory
corrective action plan.

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Action shall be taken by CAO.IRI to suspend in whole or part the approval in case
of failure to comply within the timescale granted by CAO.IRI.

M.B.706 Changes

CAO.IRI shall comply with the applicable elements of the initial approval for any
change to the organisation notified in accordance with point M.A.713.
CAO.IRI may prescribe the conditions under which the approved continuing
airworthiness management organisation may operate during such changes unless it
determines that the approval should be suspended due to the nature or the extent of
the changes.
For any change to the continuing airworthiness management exposition:
(1) In the case of direct approval of changes in accordance with M.A.704 (b),
CAO.IRI shall verify that the procedures specified in the exposition are in
compliance with this Part before formally notifying the approved organisation of
the approval.
(2) In the case an indirect approval procedure is used for the approval of the
changes in accordance with point M.A.704(c), CAO.IRI shall ensure:
(i) That the changes remain minor and
(ii) That it has an adequate control over the approval of the changes to ensure
they remain in compliance with the requirements of this Part;

M.B.707 Revocation, suspension and limitation of an approval

CAO.IRI shall:

Suspend an approval on reasonable grounds in the case of potential safety threat,

or;
Suspend, revoke or limit an approval pursuant to M.B.705.

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SUBPART H
Certificate of Release to Service – CRS

(To be developed as appropriate)

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SUBPART I
Airworthiness Review Certificate

M.B.901 Assessment of recommendations

Upon receipt of an application and associated airworthiness review certificate

recommendation in accordance with M.A.901:

(1) Appropriate qualified personnel from the CAO.IRI shall verify that the
compliance statement contained in the recommendation demonstrates that a
complete M.A.710 airworthiness review has been carried out.
(2) CAO.IRI shall investigate and may request further information to support the
assessment of the recommendation.

M.B.902 Airworthiness review by CAO.IRI

When the CAO.IRI carries out the airworthiness review and issues the
airworthiness review certificate CAO.IRI Form 15a (Appendix III), CAO.IRI shall
carry out an airworthiness review in accordance with point M.A.710.
CAO.IRI shall have appropriate airworthiness review staff to carry out the
airworthiness reviews.
(1) For all aircraft used in commercial air transport (AOC holder), and aircraft
above 2730 kg MTOM, except balloons, these staff shall have acquired:
(i) At least five years’ experience in continuing airworthiness, and;
(ii) An appropriate license in compliance with Part-66 or a nationally recognized
maintenance personnel qualification appropriate to the aircraft category
(when Part-66 refers to national rules) or an aeronautical degree or
equivalent, and;
(iii) Formal aeronautical maintenance training, and;
(iv) A position with appropriate responsibilities.
Notwithstanding the points “i” to “iv” above, the requirement laid down in point
M.B.902 (b) 1(ii), may be replaced by five years of experience in continuing
airworthiness additional to those already required by point M.B.902 (b) 1(i).

(2) For aircraft not used in commercial air transport (AOC holder) of 2730 kg
MTOM and below, and balloons, these staff shall have acquired:
(i) At least three years’ experience in continuing airworthiness, and;

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(ii) An appropriate license in compliance with Part-66 or a nationally recognized

maintenance personnel qualification appropriate to the aircraft category
(when Part-66 refers to national rules) or an aeronautical degree or
equivalent, and;
(iii) Appropriate aeronautical maintenance training, and;
(iv) A position with appropriate responsibilities.
Notwithstanding the points “i” to “iv” above, the requirement shown in point
M.B.902 (b) 2(ii) may be replaced by four years of experience in continuing
airworthiness additional to those already required by point M.B.902 (b) 2(i).

CAO.IRI shall maintain a record of all airworthiness review staff, which shall
include details of any appropriate qualification held together with a summary of
relevant continuing airworthiness management experience and training.
CAO.IRI shall have access to the applicable data as specified in points M.A.305,
M.A.306 and M.A.401 in the performance of the airworthiness review.
The staff that carries out the airworthiness review shall issue a Form 15a after
satisfactory completion of the airworthiness review.”

M.B.903 Findings

If during aircraft surveys or by other means evidence is found showing non-compliance to

a Part-M requirement, the CAO.IRI shall take the following actions:

(1) For level 1 findings, the CAO.IRI shall require appropriate corrective action to
be taken before further flight and immediate action shall be taken by CAO.IRI to
revoke or suspend the airworthiness review certificate.
(2) For level 2 findings, the corrective action required by CAO.IRI shall be
appropriate to the nature of the finding.

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Appendix I
Continuing Airworthiness Arrangement

(1) When an owner contracts an M.A. Subpart G approved continuing airworthiness

organisation in accordance with M.A.201 to carry out continuing airworthiness
management tasks, upon request by CAO.IRI a copy of the arrangement shall be
sent by the owner to CAO.IRI once it has been signed by both parties.
(2) The arrangement shall be developed taking into account the requirements of Part-
M and shall define the obligations of the signatories in relation to continuing
airworthiness of the aircraft.
(3) It shall contain as a minimum the:
(i) Aircraft registration,
(ii) Aircraft type,
(iii) Aircraft serial number,
(iv) Aircraft owner or registered lessee’s name or company details including the
address, M.A. Subpart G approved continuing airworthiness organisation details
including the address.
(4) It shall state the following:
“The owner entrusts to the approved organisation the management of the
continuing airworthiness of the aircraft, the development of a maintenance
programme that shall be approved by the airworthiness authorities where the
aircraft is registered, and the organisation of the maintenance of the aircraft
according to said maintenance programme in an approved organisation.
According to the present arrangement, both signatories undertake to follow the
respective obligations of this arrangement.

The owner certifies, to the best of their belief that all the information given to the
approved organisation concerning the continuing airworthiness of the aircraft is
and will be accurate and that the aircraft will not be altered without prior approval
of the approved organisation.

In case of any non-conformity with this arrangement, by either of the signatories,

it will become null. In such a case, the owner will retain full responsibility for
every task linked to the continuing airworthiness of the aircraft and the owner will
undertake to inform CAO.IRI within two full weeks.”

(5) When an owner contracts an M.A. Subpart G approved continuing airworthiness

organisation in accordance with M.A.201 the obligations of each party shall be
shared as follows:

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5.1. Obligations of the approvedorganisation:

1. Have the aircraft type in the scope of its approval;
2. Respect the conditions to maintain the continuing airworthiness of the aircraft
listed below:
(a) Develop a maintenance programme for the aircraft, including any
reliability programme developed, if applicable;
(b) Declare the maintenance tasks (in the maintenance programme) that may
be carried out by the pilot-owner in accordance with point M.A.803(c);
(c) Organise the approval of the aircraft’s maintenance programme;
(d) Once it has been approved, give a copy of the aircraft’s maintenance
programme to the owner;
(e) Organise a bridging inspection with the aircraft’s prior maintenance
programme;
(f) Organise for all maintenance to be carried out by an approved
maintenance organisation;
(g) Organise for all applicable airworthiness directives to be applied;
(h) Organise for all defects discovered during scheduled maintenance,
airworthiness reviews or reported by the owner to be corrected by an
approved maintenance organisation;
(i) Coordinate scheduled maintenance, the application of airworthiness
directives, the replacement of life limited parts, and component inspection
requirements;
(j) Inform the owner each time the aircraft shall be brought to an approved
maintenance organisation;
(k) Manage all technical records;
(l) Archive all technical records;
3. Organise the approval of any modification to the aircraft in accordance with
Part-21 before it is embodied;
4. Organise the approval of any repair to the aircraft in accordance with the Part-
21 before it is carried out;
5. Inform the CAO.IRI whenever the aircraft is not presented to the approved
maintenance organisation by the owner as requested by the approved
organisation;
6. Inform the CAO.IRI whenever the present arrangement has not been
respected;
7. Carry out the airworthiness review of the aircraft when necessary and issue
the airworthiness review certificate or the recommendation to CAO.IRI
8. Send within 10 days a copy of any airworthiness review certificate issued or
extended to the CAO.IRI;
9. Carry out all occurrences reporting mandated by applicable regulations;
10. Inform the CAO.IRI whenever the present arrangement is denounced by
either party.
5.2. Obligations of the owner:
1. Have a general understanding of the approved maintenance programme;
2. Have a general understanding of this Part;
3. Present the aircraft to the approved maintenance organisation agreed with the
approved organisation at the due time designated by the approved
organisation’s request;

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4. Not modify the aircraft without first consulting the approved organisation;
5. Inform the approved organisation of all maintenance exceptionally carried out
without the knowledge and control of the approved organisation;
6. Report to the approved organisation through the logbook all defects found
during operations;
7. Inform CAO.IRI whenever the present arrangement is denounced by either
party;
8. Inform CAO.IRI and the approved organisation whenever the aircraft is sold;
9. Carry out all occurrences reporting mandated by applicable regulations;
10. Inform on a regular basis the approved organisation about the aircraft flying
hours and any other utilization data, as agreed with the approved
organisation;
11. Enter the certificate of release to service in the logbooks as mentioned in
point M.A.803(d) when performing pilot-owner maintenance without
exceeding the limits of the maintenance tasks list as declared in the approved
maintenance programme as laid down in point M.A.803(c);
12. Inform the approved continuing airworthiness management organisation
responsible for the management of the continuing airworthiness of the
aircraft not later than 30 days after completion of any pilot-owner
maintenance task in accordance with point M.A.305 (a).

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Appendix II
Authorized Release Certificate CAO.IRI Form 1

These instructions relate only to the use of the CAO.IRI Form 1 for maintenance
purposes. Attention is drawn to Appendix I to Part-21 which covers the use of the
CAO.IRI Form 1 for production purposes.

1. PURPOSE AND USE

1.1 The primary purpose of the Certificate is to declare the airworthiness of
maintenance work undertaken on products, parts and appliances (hereafter
referred to as ‘item(s)’).
1.2 Correlation must be established between the Certificate and the item(s). The
originator must retain a Certificate in a form that allows verification of the
original data.
1.3 The Certificate is acceptable to many airworthiness authorities, but may be
dependent on the existence of bilateral agreements and/or the policy of the
airworthiness authority. The ‘approved design data’ mentioned in this Certificate
then means approved by the airworthiness authority of the importing country.
1.4 The Certificate is not a delivery or shipping note.
1.5 Aircraft are not to be released using the Certificate.
1.6 The Certificate does not constitute approval to install the item on a particular
aircraft, engine, or propeller but helps the end user determine its airworthiness
approval status.
1.7 A mixture of production released and maintenance released items is not
permitted on the same Certificate.
2. GENERAL FORMAT
2.1 The Certificate must comply with the format attached including block numbers
and the location of each block. The size of each block may however be varied to
suit the individual application, but not to the extent that would make the
Certificate unrecognizable.
2.2 The Certificate must be in ‘landscape’ format but the overall size may be
significantly increased or decreased so long as the Certificate remains
recognizable and legible. If in doubt consult the CAO.IRI.
2.3 The User/Installer responsibility statement can be placed on either side of the
form.
2.4 All printing must be clear and legible to permit easy reading.
2.5 The Certificate may either be pre-printed or computer generated but in either
case the printing of lines and characters must be clear and legible and in
accordance with the defined format.
2.6 The Certificate should be in English language as well as Persian.
2.7 The details to be entered on the Certificate may be either machine/computer
printed or hand-written using block letters and must permit easy reading.
2.8 Limit the use of abbreviations to a minimum, to aid clarity.

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2.9 The space remaining on the reverse side of the Certificate may be used by the
originator for any additional information but must not include any certification
statement. Any use of the reverse side of the Certificate must be referenced in
the appropriate block on the front side of the Certificate
3. COPIES
3.1 There is no restriction in the number of copies of the Certificate sent to the
customer or retained by the originator.
4. ERROR(S) ON A CERTIFICATE
4.1 If an end user finds an error(s) on a Certificate, he must identify it/them in
writing to the originator. The originator may issue a new Certificate only if the
error(s) can be verified and corrected.
4.2 The new Certificate must have a new tracking number, signature and date.
4.3 The request for a new Certificate may be honored without re-verification of the
item(s) condition. The new Certificate is not a statement of current condition
and should refer to the previous Certificate in block 12 by the following
statement; “This Certificate corrects the error(s) in block(s) [enter block(s)
corrected] of the Certificate [enter original tracking number] dated [enter
original issuance date] and does not cover conformity/condition/release to
service”. Both Certificates should be retained according to the retention period
associated with the first.
5. COMPLETION OF THE CERTIFICATE BY THE ORIGINATOR

Block 1 Approving CAO.IRI/Country

. Enter ‘The Civil Aviation Organisation of the Islamic Republic of IRAN’. This title may be pre-printed.

Block 2 CAO.IRI Form 1 headers

Pre-printed ‘AUTHORISED RELEASE CERTIFICATE/CAO.IRI FORM 1’.

Block 3 Form Tracking Number

. Enter the unique number established by the numbering system/procedure of the

organisation identified in block 4; this may include alpha/numeric characters.

Block 4 Organisation Name and Address

. Enter the full name and address of the approved organisation (refer to CAO.IRI Form
3.a) releasing the work covered by this Certificate. Logos, etc., are permitted if the logo
can be contained within the block.

Block 5 Work Order/Contract/Invoice

. To facilitate customer traceability of the item(s), enter the work order number, contract
number, invoice number, or similar reference number.

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Block 6 Item

. Enter line item numbers when there is more than one line item. This block permits easy
cross-referencing to the Remarks block 12.

Block 7 Description

. Enter the name or description of the item. Preference should be given to the term used in
the instructions for continued airworthiness or maintenance data (e.g. Illustrated Parts
Catalogue, Aircraft Maintenance Manual, Service Bulletin and Component Maintenance
Manual).

Block 8 Part Number

. Enter the part number as it appears on the item or tag/packaging. In case of an engine or
propeller the type designation may be used.

Block 9 Quantity

. State the quantity of items.

Block 10 Serial Number

. If the item is required by regulations to be identified with a serial number, enter it here.
Additionally, any other serial number not required by regulation may also be entered. If
there is no serial number identified on the item, enter “N/A”.

Block 11 Status/Work

. The following describes the permissible entries for block 11. Enter only one of these
terms – where more than one may be applicable, use the one that most accurately
describes the majority of the work performed and/or the status of the article.

(i) Overhauled. Means a process that ensures the item is in complete conformity
with all the applicable service tolerances specified in the type certificate
holder’s, or equipment manufacturer’s instructions for continued
airworthiness, or in the data which is approved or accepted by the Authority.
The item will be at least disassembled, cleaned, inspected, repaired as
necessary, reassembled and tested in accordance with the above specified
data.
(ii) Repaired. Rectification of defect(s) using an applicable standard.
(iii) Inspected/Tested. Examination, measurement, etc. in accordance with an
applicable standard (e.g. visual inspection, functional testing, bench testing
etc.).

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Applicable standard means a manufacturing/design/maintenance/ quality

standard, method, technique or practice approved by or acceptable to CAO.IRO.
The applicable standard shall be described in block 12

(v) Modified. Alteration of an item to conform to an applicable standard (*).

Block 12 Remarks

. Describe the work identified in Block 11, either directly or by reference to supporting
documentation, necessary for the user or installer to determine the airworthiness of
item(s) in relation to the work being certified. If necessary, a separate sheet may be used
and referenced from the main CAO.IRI Form 1. Each statement must clearly identify
which item(s) in Block 6 it relates to.

. Examples of information to be entered in block 12 are:

(i) Maintenance data used, including the revision status and reference.
(ii) Compliance with airworthiness directives or service bulletins.
(iii) Repairs carried out.
(iv) Modifications carried out.
(v) Replacement parts installed.
(vi) Life limited parts status.
(vii) Deviations from the customer work order.
(viii) Release statements to satisfy a foreign Civil Aviation Authority
maintenance requirement.
(ix) Information needed to support shipment with shortages or re-assembly after
delivery.
(x) For maintenance organisations approved in accordance with Subpart F of
Part-M, the component certificate of release to service statement referred to
in point M.A.613:
“Certifies that, unless otherwise specified in this block, the work identified in
block 11 and described in this block was accomplished in accordance to the
requirements of Section A, Subpart F of Part-M and in respect to that work
the item is considered ready for release to service. THIS IS NOT A
RELEASE UNDER PART-145.”

. If printing the data from an electronic CAO.IRI Form 1, any appropriate data not
fit for other blocks should be entered in this block.

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Block 13a-13e

. General Requirements for blocks 13a-13e: Not used for maintenance release. Shade,
darken, or otherwise mark to preclude inadvertent or unauthorized use.

Block 14a

. Mark the appropriate box (es) indicating which regulations apply to the completed work.
If the box “other regulations specified in block 12” is marked, then the regulations of the
other airworthiness authority (ies) must be identified in block 12. At least one box must
be marked, or both boxes may be marked, as appropriate.

. For all maintenance carried out by maintenance organisations approved in accordance

with Section A, Subpart F of Part-M, the box “other regulation specified in block 12”
shall be ticked and the certificate of release to service statement made in block 12. In that
case, the certification statement “unless otherwise specified in this block” is intended to
address the following cases;

Where the maintenance could not be completed.

Where the maintenance deviated from the standard required by Part-M.
Where the maintenance was carried out in accordance with a requirement other
than that specified in Part-M. In this case block 12 shall specify the particular
national regulation.
. For all maintenance carried out by maintenance organisations approved in accordance
with Section A of Part-145, the certification statement “unless otherwise specified in
block 12” is intended to address the following cases;

Where the maintenance could not be completed.

Where the maintenance deviated from the standard required by Part-145.
Where the maintenance was carried out in accordance with a requirement other
than that specified in Part-145. In this case block 12 shall specify the particular
national regulation.

Block 14b Authorized Signature

. This space shall be completed with the signature of the authorized person. Only persons
specifically authorized under the rules and policies of the CAO.IRI are permitted to sign
this block. To aid recognition, a unique number identifying the authorized person may be
added.

Block 14c Certificate/Approval Number

. Enter the Certificate/Approval number/reference. This number or reference is issued by

CAO.IRI.

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Block 14d Name

. Enter the name of the person signing block 14b in a legible form.

Block 14e Date

. Enter the date on which block 14b is signed, the date must be in the format dd = 2 digit
day, mmm = first 3 letters of the month, yyyy = 4 digit year

User/Installer Responsibilities

. Place the following statement on the Certificate to notify end users that they are not
relieved of their responsibilities concerning installation and use of any item accompanied
by the form:

“THIS CERTIFICATE DOES NOT AUTOMATICALLY CONSTITUTE AUTHORITY

TO INSTALL.

WHERE THE USER/INSTALLER PERFORMS WORK IN ACCORDANCE WITH

REGULATIONS OF AN AIRWORTHINESS AUTHORITY DIFFERENT THAN THE
AIRWORTHINESS AUTHORITY SPECIFIED IN BLOCK 1, IT IS ESSENTIAL
THAT THE USER/INSTALLER ENSURES THAT HIS/HER AIRWORTHINESS
AUTHORITY ACCEPTS ITEMS FROM THE AIRWORTHINESS AUTHORITY
SPECIFIED IN BLOCK 1.

STATEMENTS IN BLOCKS 13A AND 14A DO NOT CONSTITUTE

INSTALLATION CERTIFICATION. IN ALL CASES AIRCRAFT MAINTENANCE
RECORDS MUST CONTAIN AN INSTALLATION CERTIFICATION ISSUED IN
ACCORDANCE WITH THE NATIONAL REGULATIONS BY THE
USER/INSTALLER BEFORE THE AIRCRAFT MAY BE FLOWN.”

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Appendix III

Airworthiness Review Certificate

CAO.IRI Form 15.a

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CAO.IRI Form 15.b

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Appendix IV
Class and Ratings System to be used for the Approval of Maintenance Organisations
referred to in Part-M Subpart F and Part-145

(17) Except as stated otherwise for the smallest organisations in paragraph 12, the table
referred to in point 13 provides the standard system for the approval of maintenance
organisation under Subpart F of Part-M and Part-145. An organisation must be granted
an approval ranging from a single class and rating with limitations to all classes and
ratings with limitations.

(18) In addition to the table referred to in point 13, the approved maintenance organisation
is required to indicate its scope of work in its maintenance organisation manual/
exposition. See also paragraph 11.

(19) Within the approval class (es) and rating(s) granted by CAO.IRI, the scope of work
specified in the maintenance organisation exposition defines the exact limits of
approval. It is therefore essential that the approval class (es) and rating(s) and the
organisations scope of work are matching.

(20) A category A class rating means that the approved maintenance organisation may
carry out maintenance on the aircraft and any component (including engines and/ or
Auxiliary Power Units (APUs), in accordance with aircraft maintenance data or, if
agreed by CAO.IRI, in accordance with component maintenance data, only whilst such
components are fitted to the aircraft. Nevertheless, such A-rated approved maintenance
organisation may temporarily remove a component for maintenance, in order to
improve access to that component, except when such removal generates the need for
additional maintenance not eligible for the provisions of this paragraph. This will be
subject to a control procedure in the maintenance organisation exposition to be
approved by CAO.IRI. The limitation section will specify the scope of such
maintenance thereby indicating the extent of approval.

(21) A category B class rating means that the approved maintenance organisation may
carry out maintenance on the uninstalled engine and/or APU and engine and/or APU
components, in accordance with engine and/or APU maintenance data or, if agreed by
CAO.IRI, in accordance with component maintenance data, only whilst such
components are fitted to the engine and/or APU. Nevertheless, such B-rated approved
maintenance organisation may temporarily remove a component for maintenance, in
order to improve access to that component, except when such removal generates the
need for additional maintenance not eligible for the provisions of this paragraph. The
limitation section will specify the scope of such maintenance thereby indicating the
extent of approval. A maintenance organisation approved with a category B class
rating may also carry out maintenance on an installed engine during ‘base’ and ‘line’
maintenance subject

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to a control procedure in the maintenance organisation exposition to be approved by

CAO.IRI. The maintenance organisation exposition scope of work shall reflect such
activity where permitted by CAO.IRI.

(22) A category C class rating means that the approved maintenance organisation may
carry out maintenance on uninstalled components (excluding engines and APUs)
intended for fitment to the aircraft or engine/APU. The limitation section will specify
the scope of such maintenance thereby indicating the extent of approval. A
maintenance organisation approved with a category C class rating may also carry out
maintenance on an installed component during base and line maintenance or at an
engine/APU maintenance facility subject to a control procedure in the maintenance
organisation exposition to be approved by CAO.IRI. The maintenance organisation
exposition scope of work shall reflect such activity where permitted by CAO.IRI.

(23) A category D class rating is a self-contained class rating not necessarily related to a
specific aircraft, engine or other component. The D1 – Non Destructive Testing (NDT)
rating is only necessary for an approved maintenance organisation that carries out
NDT as a particular task for another organisation. A maintenance organisation
approved with a class rating in A or B or C category may carry out NDT on products it
is maintaining subject to the maintenance organisation exposition containing NDT
procedures, without the need for a D1 class rating.

(24) In the case of maintenance organisations approved in accordance with Part-145,

category A class ratings are subdivided into ‘Base’ or ‘Line’ maintenance. Such an
organisation may be approved for either ‘Base’ or ‘Line’ maintenance or both. It
should be noted that a ‘Line’ facility located at a main base facility requires a ‘Line’
maintenance approval.

(25) The limitation section is intended to give CAO.IRI the flexibility to customize the
approval to any particular organisation. Ratings shall be mentioned on the approval
only when appropriately limited. The table referred to in point 13 specifies the types of
limitation possible. Whilst maintenance is listed last in each class rating it is acceptable
to stress the maintenance task rather than the aircraft or engine type or manufacturer, if
this is more appropriate to the organisation (an example could be avionic systems
installations and related maintenance). Such mention in the limitation section indicates
that the maintenance organisation is approved to carry out maintenance up to and
including this particular type/task.

(26) When reference is made to series, type and group in the limitation section of class A
and B, series means a specific type series such as Airbus 300 or 310 or 319 or Boeing
737-300 series or RB211-524 series or Cessna 150 or Cessna 172 or Beech 55 series or
continental O-200 series etc; type means a specific type or model such as Airbus 310-
240 type or RB 211-524 B4 type or Cessna 172RG type; any number of series or types
may be quoted; group means for example Cessna single piston engine aircraft or
Lycoming non-supercharged piston engines etc.

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(27) When a lengthy capability list is used which could be subject to frequent amendment,
then such amendment may be in accordance with the indirect approval procedure
referred to in points M.A.604(c) and M.B.606(c) or 145.A.70(c) and 145.B.40, as
applicable.

(28) A maintenance organisation which employs only one person to both plan and carry
out all maintenance can only hold a limited scope of approval rating. The maximum
permissible limits are:

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CLASS RATING LIMITATION

Rating A2 Aeroplanes 5700 Kg Piston Engine 5700 Kg And

Class Aircraft
And Below Below
Single Piston Engine 3175Kg
Class Aircraft Rating A3 Helicopters
And Below
Rating A4 Aircraft Other Than
Class Aircraft No Limitation
A1, A2 And A3
Class Engines Rating B2 Piston Less Than 450 Hp
Class Components Rating
Other Than Complete Engines C1 To C22 As Per Capability List
Or APU’s.
NDT Method(S) To Be
Class Specialized D1 NDT
Specified.

It should be noted that such an organisation may be further limited by CAO.IRI in the
scope of approval dependent upon the capability of the particular organisation.

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13. Table

CLASS RATING LIMITATION BASE LINE

[Rating reserved to Maintenance
Organisations approved in
A1 Aeroplanes above accordance with Part-145] [Shall [YES/ YES/
5700 kg state aeroplane manufacturer or NO]* NO]*
group or series or type and/or the
maintenance tasks]
[Shall stateA320 Series
Example: Airbus aeroplane
A2 Aeroplanes 5700 kg manufacturer or group or series [YES/ [YES/
AIRCRAFT and below or type and/or the maintenance NO]* NO]*
tasks]
Example:
[Shall DHC-6
state Twin Otter
helicopter
Series
manufacturer or group or series [YES/ [YES/
A3 Helicopters or type and/or the maintenance NO]* NO]*
task(s)]
Example: Robinson R44
A4 Aircraft other than [Shall state aircraft series or type [YES/ [YES/
and/or the maintenance task(s).] NO]* NO]*
A1, A2 and A3
EN B1 Turbine [Shall state engine series or type and/or the maintenance
task(s)] Example: PT6A Series
GI
[Shall state engine manufacturer or group or series or type
NE B2 Piston
and/or the maintenance task(s)]
S
[Shall state engine manufacturer or series or type and/or the
B3 APU maintenance task(s)]
C1 Air Condition &
Pressurisation
C2 Auto Flight
C3 Communication and
Navigation
C4 Doors – Hatches
C5 Electrical Power & Lights
C6 Equipment [Shall state aircraft type or aircraft manufacturer or
C7 Engine – APU component manufacturer or the particular component and/ or
C8 Flight Controls cross refer to a capability list in the exposition and/or the
C9 Fuel maintenance task(s).]
COMPONENTS C10 Helicopter – Rotors
Example: PT6A Fuel Control
OTHER THAN C11 Helicopter –
COMPLETE Transmission
ENGINES OR C12 Hydraulic Power
APUs C13 Indicating/Recording
System
C14 Landing Gear
C15 Oxygen
C16 Propellers
C17 Pneumatic & Vacuum
C18 Protection ice/rain/ fire
C19 Windows
C20 Structural
C21 Water Ballast
C22 Propulsion Augmentation
SPECIALISED D1 Non Destructive
SERVICES Testing [Shall state particular NDT method(s)]

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Appendix V
CAO.IRI Form 3.a

Maintenance Organisation Approval referred to Part-M Subpart F

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Appendix VI
CAO Form 14

Continuing Airworthiness Management Organisation

Approval referred to Part-M Subpart G

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Appendix VII
Complex Maintenance Tasks

The following constitutes the complex maintenance tasks referred to in M.A.502 (d) 3,
M.A.801 (b) 2 and M.A.801(c):

1. The modification, repair or replacement by riveting, bonding, laminating, or welding

of any of the following airframe parts:
(a) A box beam;
(b) A wing stringer or chord member;
(c) A spar;
(d) A spar flange;
(e) A member of a truss-type beam;
(f) The web of a beam;
(g) A keel or chine member of a flying boat hull or a float;
(h) A corrugated sheet compression member in a wing or tail surface;
(i) A wing main rib;
(j) A wing or tail surface brace strut;
(k) An engine mount;
(l) A fuselage longeron or frame;
(m) A member of a side truss, horizontal truss or bulkhead;
(n) A seat support brace or bracket;
(o) A seat rail replacement;
(p) A landing gear strut or brace strut;
(q) An axle;
(r) A wheel; and
(s) A ski or ski pedestal, excluding the replacement of a low-friction coating.
2. The modification or repair of any of the following parts:
(a) Aircraft skin, or the skin of an aircraft floats, if the work requires the use of a
support, jig or fixture;
(b) Aircraft skin that is subject to pressurization loads, if the damage to the skin
measures more than 15 cm (6 inches) in any direction;
(c) A load-bearing part of a control system, including a control column, pedal,
shaft,
quadrant, bell crank, torque tube, control horn and forged or cast bracket, but
excluding

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(i) The swaging of a repair splice or cable fitting, and

(ii) The replacement of a push-pull tube end fitting that is attached by riveting;
and
(d) Any other structure, not listed in (1) that a manufacturer has identified as
primary structure in its maintenance manual structural repair manual or
instructions for continuing airworthiness.
3. The performance of the following maintenance on a piston engine:
(a) Dismantling and subsequent reassembling of a piston engine other than
(i) To obtain access to the piston/cylinder assemblies; or
(ii) To remove the rear accessory cover to inspect and/or replace oil pump
assemblies, where such work does not involve the removal and re-fitment of
internal gears;
(b) Dismantling and subsequent reassembling of reduction gears;
(c) Welding and brazing of joints, other than minor weld repairs to exhaust units
carried out by a suitably approved or authorized welder but excluding
component replacement;
(d) The disturbing of individual parts of units which are supplied as bench tested
units, except for the replacement or adjustment of items normally replaceable or
adjustable in service.
4. The balancing of a propeller, except:
(a) For the certification of static balancing where required by the maintenance
manual;
(b) Dynamic balancing on installed propellers using electronic balancing equipment
where permitted by the maintenance manual or other approved airworthiness
data;
5. Any additional task that requires:
(a) Specialized tooling, equipment or facilities; or
(b) Significant coordination procedures because of the extensive duration of the
tasks and the involvement of several persons.

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Appendix VIII
Limited Pilot-Owner Maintenance

In addition to the requirements laid down in Part-M, the following basic principles are to
be complied with before any maintenance task is carried out under the terms of Pilot-
owner maintenance:

Competence and responsibility

(1) The Pilot-owner is always responsible for any maintenance that he performs.
(2) Before carrying out any Pilot-owner maintenance tasks, the Pilot-owner must
satisfy himself that he is competent to do the task. It is the responsibility of
Pilot- owners to familiarize themselves with the standard maintenance practices
for their aircraft and with the aircraft maintenance programme. If the Pilot-
owner is not competent for the task to be carried out, the task cannot be released
by the Pilot-owner.
(3) The Pilot-owner (or his contracted continuing airworthiness management
organisation referred to in Subpart G, Section A of this Part) is responsible for
identifying the Pilot-owner tasks according to these basic principles in the
maintenance programme and for ensuring that the document is updated in a
timely manner.
(4) The approval of the maintenance programme has to be carried out in accordance
with point M.A.302.
Tasks
The Pilot-owner may carry out simple visual inspections or operations to check for
general condition and obvious damage and normal operation of the airframe, engines,
systems and components.

Maintenance tasks shall not be carried out by the Pilot-owner when the task:

(1) is critically safety related, whose incorrect performance will drastically affect
the airworthiness of the aircraft or is a flight safety sensitive maintenance task as
specified in point M.A.402(a) and/or;
(2) Requires the removal of major components or major assembly and/or;
(3) Is carried out in compliance with an Airworthiness Directive or an
Airworthiness
(4) Limitation Item, unless specifically allowed in the AD or the ALI and/or;
(5) Requires the use of special tools, calibrated tools (except torque wrench and
crimping tool) and/or;

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(6) Requires the use of test equipments or special testing (e.g. NDT, system tests or
operational checks for avionic equipment) and/or;

(7) Is composed of any unscheduled special inspections (e.g. Heavy landing check)
and/or;

(8) Is effecting systems essential for the IFR operations and/or;

(9) Is listed in Appendix VII or is a component maintenance task in accordance
with point M.A.502.

The criteria 1 to 8 listed above cannot be overridden by less restrictive instructions issued
in accordance with “M.A.302 (d) Maintenance Programme”.

Any task described in the aircraft flight manual as preparing the aircraft for flight
(Example: assembling the glider wings or pre-flight), is considered to be a pilot task and
is not considered a Pilot-owner maintenance task and therefore does not require a
Certificate of Release to Service.

Performance of the maintenance Pilot-owner tasks and records

The maintenance data as specified in point M.A.401 must be always available during the
conduct of Pilot-owner maintenance and must be complied with. Details of the data
referred to in the conduct of Pilot-owner maintenance must be included in the Certificate
of Release to Service in accordance with point M.A.803 (d).

The Pilot-owner must inform the approved continuing airworthiness management

organisation responsible for the continuing airworthiness of the aircraft (if applicable) not
later than 30 days after completion of the Pilot-owner maintenance task in accordance
with point M.A.305 (a).

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Appendix IX
CAO.IRI Form 2.a

Application for Maintenance Organisation Approval

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Acceptable Means of Compliance

AMC M.A.402(b)
In this context officially recognized standard means Standards acceptable to the Authority
include acceptable national or international standards and approved original equipment
manufacturer’s standards.

AMC M.B.902 (a)

When CAO.IRI carries out the airworthiness review and issues the airworthiness review
certificate or airworthiness certificate, Appendix I (CAO.IRI Form 10) will be used by the
competent CAO.IRI airworthiness staff.

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Appendix I to AMC M.B.902(a)

CAO.IRI Form10

Last revision of this form can be found in www.cao.ir.

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