GOVERNMENT OF INDIA

OFFICE OF THE DIRECTOR GENERAL OF CIVIL AVIATION

TECHNICAL CENTRE, OPP. SAFDARJUNG AIRPORT, NEW DELHI-110 003

CIVIL AVIATION REQUIREMENTS

SECTION 8 – AIRCRAFT OPERATION
SERIES B PART I
DATED 30TH MARCH, 2001 EFFECTIVE: FORTHWITH

Subject: Operator Authorisation for ILS Cat-II/IIIA/B Operations

1. INTRODUCTION

1.1 As part of the modernisation of airport facilities in the country, Instrument

Landing System (ILS) capability is being upgraded to Cat-II and Cat-IIIA/B
levels at some of the airports to permit operations even in poor weather
conditions. For conducting Cat-II or Cat-IIIA/B operations, the operators
are required to take necessary measures to meet the requirements and
obtain authorisation from DGCA.

1.2 Authorisation for Cat-II and Cat-IIIA/B operations is dependent on the

following four elements in order to maintain the required level of safety:
a) The aircraft;

b) The flight crew;

c) The airport; and

d) The operator

All of these elements must comply with the regulations stipulated by DGCA
and ICAO. An aircraft type must be approved for Cat-II/Cat-IIIA/B
operations with an Automatic Landing System, which provides automatic
control of the aircraft during approach and landing. The flight crew should
be trained for such operations and have authorisation for the same from
DGCA. Similarly, the airport must be equipped and approved for Cat-II/Cat-
IIIA/B operations.

1.3 This CAR lays down the requirements to be met by the operators in respect
of equipment, organisation, staffing, training and other matters

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affecting the operations of aircraft for grant of authorisation for ILS Cat-II
and Cat-IIIA/B operations. Authorisation for Cat-II & IIIA/B operations is
through issuance of, or amendments to, Operations Specifications.

1.4 This CAR is issued under the provisions of Rule 133 A of the Aircraft Rules,
1937. The Operations Circular No.2 of 1999 dated the 12th March,
1999 on the subject stands cancelled.

2. APPLICABILITY

The requirements contained in this CAR are applicable to all Indian operators
intending to carry out Cat-II and Cat-IIIA/B operations. Before operating flights
to foreign airports, the operators shall file their operating minima and other
relevant documents required by the Aviation Authority of that country and seek
their approval for commencing Cat-II and Cat-IIIA/B operations after obtaining
approval from DGCA India for the same.

3. DEFINITIONS

a) Categories of precision approach and landing operations

i) Category-II (Cat-II) Operation: A precision instrument approach and

landing with Decision Height lower than 60m (200 ft) but not lower than
30m (100 ft), and a Runway Visual Range not less than 300m.

ii) Category-IIIA (Cat-IIIA) Operation: A precision instrument approach

and landing with :

a) a Decision Height lower than 30m (100 ft), but not lower than 15m
(50 ft); and
b) a Runway Visual Range not less than 175 m.

iii) Category-IIIB (Cat-IIIB) Operation: A precision instrument

approach and landing with:

a) No Decision Height or a Decision Height lower than 50 ft (15

m).
b) Runway Visual Range less than 175 m but not less than 50m.

Note: Where the Decision Height and Runway Visual Range do not fall within
the same Category, either the Decision Height or the RVR may determine in
which Category the operation is to be considered. The operation will be in the
Category with the lower minima.

b) Alert Height (AH) : An Alert Height is a height above the runway based on
the characteristics of the aeroplane and its fail operational Automatic Landing
System, above which a Category-III approach would be discontinued and a
missed approach initiated if a failure occurred in one of the redundant parts of
the Automatic Landing System, or in the relevant ground equipment.

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c) Decision Altitude/Height (DA/H): A specified altitude or height in the
precision approach at which a missed approach must be initiated if the required
visual reference to continue the approach has not been established.

Note

i) Decision Altitude (DA) is referenced to Mean Sea Level (MSL) and Decision
Height (DH) is referenced to the threshold elevation.

ii) The required visual reference means that section of the visual aids or of the
approach area which should have been in view for sufficient time for the pilot to
have made an assessment of the aircraft position and rate of change of
position, in relation to the desired flight path.

d) Low Visibility Procedures (LVP): Procedures applied at an aerodrome for

the purpose of ensuring safe operations during Category II and IIIA/B
approaches and Low Visibility Take-offs.

e) Fail-passive Automatic Landing System: An Automatic Landing System

is fail-passive if, in the event of a failure, there is no significant deviation of
aeroplane trim, flight path or attitude but the landing will not be completed
automatically.

f) Fail-operational Automatic Landing System: An Automatic Landing

System is fail-operational if, in the event of a failure, the approach, flare and
landing can be completed by the remaining part of the automatic system.

4. PROCEDURE FOR GRANT OF AUTHORISATION

4.1 An operator applying for Cat-II or Cat-IIIA/B operations shall adhere to the rigid
structure of the regulations to get the operational authorisation. An operator,
who applies for Cat-II or Cat-IIIA/B authorisation, shall submit a detailed
proposal to the DGCA defining clearly the plans and policies on all aspects of
the operations. The proposal shall include information on, amongst other
aspects, the following items:

a) Aircraft Type
Details of the aircraft intended to be used, its certification status with
respect to Cat-II or Cat-IIIA/B operations, list of required equipment for
the intended mode of operations, the operating limitations, the
procedures to be followed following various failures, etc.

b) Maintenance Programme
description of the maintenance programme, which is mandatory to
ensure that the airborne equipment will remain at the required level of
airworthiness standard, reliability and performance. It shall include
training of Aircraft Maintenance Engineers, maintenance of test
equipment and standards, maintenance procedures, engineering
modifications and periodic checks of auto-land system.

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c) Flight Crew Procedure

A description of the operational procedures covering in particular crew
task sharing, approach monitoring, decision-making, handling of failures
and go-around. Detailed requirements in this regard are given in
succeeding para 5.

d) Flight Crew Training

Syllabii for ground training, simulator training, flight training, recurrent
training and upgrade training shall be furnished in order to get the Cat-
II or Cat-IIIA/B authorisation for the flight crew.

e) Airfield Equipment
A description of the airfield equipment in accordance with ICAO
standards for Cat-II/Cat-IIIA/B, including visual and non-visual aids,
runway characteristics, obstacle clearance area, RVR measurements,
ATC procedures, low visibility procedures, etc.

f) Airfield Operating Minima

A proposal for airfield operating minima for each airfield intended to be
used by the operator for such operations.

4.2 After receiving the proposal, concerned DGCA officers shall examine the
information and hold discussions with the operator to ensure that the
operator establishes a well laid down system and procedures for conducting
and monitoring Cat-II/Cat-IIIA/B operations.

4.3 On completion of the necessary actions, the operator shall submit a

consolidated statement showing item-wise compliance to the requirements
of this CAR. On satisfactory meeting the requirements DGCA will grant
necessary authorisation by issuing relevant initial Operations Specifications
for Cat-II operations and specifying :

i) Minima (RVR, AH and DH) to be used;

ii) Aeroplanes (indicated by registration numbers) which can be used;
iii) Aerodromes to be used; and
iv) Any limitation that may be imposed by DGCA.

4.4 The operator shall be required to demonstrate his ability to perform Cat-II
operations with an appropriate approach success rate and level of safety.
On satisfactory completion of this, the operator shall be granted standard
Operations Specifications for Cat-II operations.

4.5 For grant of Cat-IIIA/B authorisation, same procedure shall be followed i.e.
grant of initial Operations Specifications, successful operational
demonstration and grant of standard Operations Specifications through
gradual reduction in meteorological minima.

4.6 The Operations Specifications shall form part of the operator's permit.

5. OPERATING REQUIREMENTS

5.1 Operators shall develop procedures and operational instructions to be used

by their flight crew for Cat II/ IIIA/B operations and Low Visibility Take-off to

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ensure safe conduct of the operations. These procedures and instructions
shall be included in the Operations Manual. All the instructions shall be
compatible with limitations and mandatory procedures contained in the
approved Flight Manual and the Indian Rules, Regulations and other
instructions issued by DGCA from time to time.

5.2 The procedures and the operational instructions shall cover normal and
abnormal situations which can be encountered in actual operations which
shall include at least the following items:

i) Checks for satisfactory functioning of the aircraft equipment, both before

departure and in flight;
ii) Effect on minima caused by changes in the status of the ground
installations and airborne equipment;
iii) Procedure for take off, approach, flare, landing, roll out and missed
approach;
iv) Procedure to be followed in the event of failures, warnings and other
abnormal situations;
v) The minimum visual reference required;
vi) The importance of correct seating and eye position; and
vii) Action which may be necessary arising from deterioration of the visual
reference.

5.3 Crew Coordination :

Appropriate procedures for crew co-ordination shall be established so that

each flight crew member can carry out their assigned responsibilities.
Briefings prior to the applicable takeoff or approach shall be specified to
assure appropriate and necessary crew communications. Responsibilities
and assignment of tasks shall be clearly understood by crew members.

5.4 Monitoring :
The operator shall establish procedures and instructions for Low Visibility Take
Off and Cat-II/IIIA/B operations. These procedures shall be included in the
Operations Manual and contain the duties of flight crew members during taxing,
take off, approach, flare, landing, roll out and missed approach as appropriate.
Procedures shall assure that adequate crew attention can be devoted to
control of aircraft flight path, displacements from intended path, mode
annunciations, failure annunciations and warnings, and adherence to minima
requirements associated with DH and AH. Procedures for calling out failure
conditions shall be pre-established, and responsibility for alerting other crew
members to a failure condition shall be clearly identified.

5.5 Use of the Decision Height or Alert Height :

rocedure for setting various reference bugs in the cockpit shall be laid down,
responsibilities for Decision Height call-outs shall be clearly defined, and visual
reference requirements necessary at Decision Height shall be specified so that
flight crew are aware of the necessary visual references that shall be established
by, and maintained after passing Decision Height.

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5.6 The operator shall assure that at each runway intended for Category II/IIIA/B
operations, the Radio Altimeter systems used to define Alert Height or Decision
Height provides consistent, reliable, and appropriate readings for determination
of Decision Height or Alert Height over the terrain underlying the approach path.
Any adjustments to approach minima or procedures made on final approach shall
be completed prior to Alert Height and applicable annunciation (e.g. LAND2) for
fail passive operations.

5.7 Call-outs : Altitude/Height call-outs shall be used for Category II/IIIA/B. Call-outs
shall be accomplished by the flight crew or shall be automatic (e.g., using
synthetic voice call-outs). Call-outs shall be specified to address any non-normal
configurations, mode switches, failed modes, or other failures that could affect
safe flight, continuation of the landing, or the accomplishment of a safe missed
approach.

5.8 Aircraft Configurations : Operational procedures shall include any authorised

aircraft configurations that might be required for low visibility takeoff or
Category-II/IIIA/B approaches or missed approaches. Examples of
configurations that operational procedures which need to be included are:
(i) Alternate Flap Settings approved for Category-II/IIIA/B;
(ii) Use of alternate AFCS modes or configurations (e.g., Single Land,
LAND2);
(iii) Inoperative equipment provisions related to the Minimum Equipment List,
such as a non-availability of certain electrical system components,
inoperative Radio Altimeter, air data computers, hydraulic systems or
instrument switching system components; and
(iv) Availability and use of alternate electrical power sources (e.g., APU) if
required as a standby source.

Procedures required to accommodate various aircraft configurations shall be

readily available to the flight crew and the aircraft dispatcher to preclude the
inadvertent use of an incorrect procedure or configuration. Acceptable
configurations and aircraft type shall be clearly identified so that the crew can
easily determine whether the aircraft is or is not in a configuration to initiate a
low visibility takeoff or Category-II/IIIA/B Approach.

5.8 Airport Surface Depiction for Category II/IIIA/B Operations :

A suitable airport surface depiction (e.g., airport diagrams) shall be available to
flight crews to assure appropriate identification of visual landmarks or lighting to
safely accomplish taxing in Cat-II/IIIA/B conditions from the gate to the runway
and from the runway to the gate. The Airport depiction shall use an appropriate
scale with suitable detailed information on gate locations, parking locations,
holding locations, critical areas, obstacle free zones, taxi way identifications,
runway identifications, and any applicable taxi way markings for designated
holding spots or holding areas.

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5.10 The operator shall lay down procedure in their operations manual to ensure
that the Commander satisfies himself that :

i) the status of the visual and non-visual facilities is sufficient prior to

commencing a Low Visibility Take Off or a Cat-II or Cat-IIIA/B approach;

ii) appropriate LVPs are in force according to information received from Air
Traffic Services before commencing a low visibility take off or a Cat-II or Cat-
IIIA/B approach.

5.11 The operator shall include in the Operations Manual the minimum equipment
that has to be serviceable prior to departure for the commencement of Low
Visibility Take Off or a Cat-II or Cat-IIIA/B approach in accordance with the
Aeroplane Flight Manual or approved document and the Commander shall
satisfy himself that the status of aeroplane and the relevant airborne system is
appropriate for the specific operation to be conducted.

5.12 The operator shall lay down despatch procedures which shall include
appropriate consideration of reported and forecast weather, field conditions,
facilities status, NOTAM information, alternate airport designation, missed
approach performance, crew qualifications, airborne system status (provisions
of MEL and CDL) and fuel planning.

5.13 All the flight crew members of a flight shall hold appropriate authorisation for
the particular type of operations to be conducted.

5.14 Clearance to carry out Cat-II and Cat-IIIA/B approach shall be requested from
ATC, who shall activate the low visibility procedures i.e. prepare the airfield and
assure appropriate aircraft separation. Such an approach shall not be
undertaken until the clearance has been received. ATC shall be informed when
an automatic landing is intended to be performed, so that the ATC may initiate
action to provide the same protection even in Cat-I or better conditions.

6. AIRCRAFT AND MAINTENANCE REQUIREMENTS

The detailed airworthiness and maintenance requirements for Cat-II and Cat-
IIIA/B operations are contained in Civil Aviation Requirement, Section 2
Airworthiness, Series ‘I’ Part IX. Some of the salient aspects are as given
hereunder:-
i) For Cat-II/IIIA/B operations, only multi-engine aircraft duly certified for
such operations shall be used. The aircraft type shall be equipped with
an automatic landing system, which provides automatic control of the
aircraft during approach and landing. In order to perform the Cat-
II/IIIA/B approach and automatic landing, the equipment listed in
aeroplane flight manual shall required to be operative. If one of these
equipments or systems is listed in the MEL with associated despatch
conditions, the MEL must clearly indicate that Cat-II or Cat-IIIA/B
operations are not authorised.
ii) Every operator shall establish a specific maintenance programme in
order to be able to check and demonstrate the full capability of the

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aircraft to perform Cat-II/Cat-IIIA/B operations. A reliability programme

shall be developed/extended to monitor, track and control the
operational status of the aircraft to achieve successful Cat-II/Cat-IIIA/B
landings.

iii) Every operator shall establish a specific procedure to govern the

capability of the aircraft to conduct Cat-II/Cat-IIIA/B operations in the
following conditions:
a) Confirmed defect with corrective action carried out;
b) Unconfirmed defect but with corrective action;
c) Aircraft despatch under MEL conditions;
d) Unable to correct defect and not under MEL conditions; and
e) Unable to perform the required test;

iv) Upgrading/down-grading capability procedure shall be defined so as to

assist the despatch of aircraft. The despatch policy shall be based on
the Minimum Equipment List as it governs the basic criteria for operation.
The despatch criteria and status of aircraft shall be recorded in the
aircraft log book with reference to the MEL. A prominent placard shall be
displayed in the aircraft and in the flight operations office to inform the
crew of the current status of each aircraft.

v) If an aircraft has not performed Cat-II/Cat-IIIA/B operations including

practice approaches for a period of one month, a specific check shall be
carried out for which a proper schedule shall be prepared by the
operator.

7. FLIGHT CREW TRAINING REQUIREMENTS

7.1 Flight crew shall be trained and equipped in all aspects of all weather
operations. Detailed requirements for the ground and flight training are
contained in the CAR Section 7 – Flight Crew Standards Training And Licensing
Series 'X', Part I and ICAO Manual of All Weather Operations Doc
No.9365.

7.2 The operators shall lay down detailed training programme for initial
authorisation, recurrent training and for obtaining authorisation for an additional
aircraft type. The operators are encouraged to have their training programmes
higher than the minimum stipulated by DGCA, keeping in view the general level
of experience of the flight crew employed by them.

8. AIRPORT REQUIREMENTS

Requirements contained in ICAO Annex 14, Manual of All Weather Operations

Doc 9365 (Cat-II and Cat-IIIA/B) and those stipulated by DGCA shall be
complied with. Some of the salient requirements concerning airports are given
below :

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a) An operator shall not use an airport for Cat-II or Cat-IIIA/B operations
unless it is approved for such operations.

b) Due to very low visibility in Cat-II and Cat-IIIA/B operations, each airfield
shall meet stringent criteria concerning obstacle clearance to avoid any
aircraft on approach, landing or go-around touching obstacles on the
ground. The basis of these criteria are included in ICAO Annex 14 and
PANS-OPS Doc-8168.

c) The ILS installation shall conform to the appropriate specifications

contained in ICAO Annex 10, Volume 1, Part (i), Chapters 2 & 3 and be
designed and operated in accordance with the guidance material
contained in attachment 'C' to Part (i) of Annex 10.

d) During Cat-II and Cat-IIIA/B approaches, the ILS beams shall be

protected from unacceptable disturbances in the critical area and
sensitive area.

e) The RVR reports shall be given in increments of not more than 50m
when the RVR is less than 800m and not more than 25m when the RVR
is less than 150m.

f) A system of maintenance of visual aids shall be established to ensure

both lighting and marking system reliability. A system of maintenance for
ILS installations shall also be established with regular ground and flight
checks as stipulated in the ICAO Annex 10. Users shall be advised as
soon as possible of any degradations in ILS performance.

g) A secondary power supply for visual aids shall be required with

maximum switch-over time as indicated in ICAO Annex 14.
h) Cat-II and Cat-IIIA/B operations shall required special procedures for the
ATC and all services in the aerodrome i.e. Low Visibility Procedures. The
aerodrome authority shall develop the procedure in accordance with the
ICAO Manual of All Weather Operations. Mainly, the procedures to be
established are :
i) procedures for ATC to be quickly informed of all degradations in ILS
performance and to inform the pilot, if necessary;
ii) procedures for ATC to be quickly informed of all degradations in
visual aids and to inform the pilot, if necessary;
iii) procedures for the protection of the Obstacle Free Zone by the
control of ground movements;
iv) procedures for the protection of the ILS critical area and the ILS
sensitive area by control of ground movements and adequate
separation between two aircraft on approach or one aircraft on
approach and another taking-off;
v) procedures for meteorological services particularly for ATC to quickly
inform the crew changes in RVR;
vi) procedures for maintenance; and

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vii) procedures for security.

9. OPERATIONAL DEMONSTRATION AND ISSUANCE OF OPERATIONS

SPECIFICATIONS

The implementation of all weather operations shall be achieved in stages

through gradual reduction in meteorological criteria commensurate with the
confidence and experience gained by the operator as stipulated
hereunder:
9.1 Issuance of Initial Cat-II Operations Specifications

(i)The operator shall have gained experience of at least one year in Cat-I
operations for issuance of initial Operations Specifications for Cat-II
operations.

(ii)Operator shall be issued initial Operations Specifications authorising to carry

out Cat-II operations with Decision Height of 150 feet and RVR of 500 metres
after ensuring that an operator has prepared all the required documents,
procedures, maintenance and training programmes and the flight crew have
been trained and obtained necessary authorisation for conducting Cat-II
operations.

9.2 Operational Demonstration for Cat-II Opeartions

9.2.1 The operator shall carry out operational demonstration, in order to establish
that an appropriate level of safety can be met in such operations. The
operator shall prove that he can perform Cat-II operations with the
appropriate success rate and level of safety. For this purpose, operator shall
carry out in-service proving for a period of at least six months. Particular
attention shall be given to the flight and maintenance procedures as
established by the operator. During this period, the operator shall successfully
complete the following operations demonstrations and data collection
programme in line service as part of the approval process to ensure continued
performance and reliability of the system before operations down to the next
succeeding lower minima are authorised:
(i) For operational demonstration of airborne system, one hundred
successful landings are to be accomplished in line operations,
including training flights, using Cat-II system. The system should
demonstrate reliability and performance in line operations
consistent with the operational concepts.
(ii) For collection of data during airborne system demonstration, the
applicant shall provide crew flight reports and automatic flight
recording data giving approach and landing performance
whenever an approach and landing is attempted utilising the Cat-
II system, regardless of whether the approach is abandoned or
concluded successfully. The completed forms and a summary of
the demonstration results will be made available to DGCA.

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Entry must also be made in the Techlog/Flight Report Book after

the flight.

(iii) Approaches where the pilot was assured that the critical area
protection was provided which do not result in a successful
landing, are to be fully documented giving factors which result in
unsuccessful approaches e.g. due to ATC factors, faulty ground
station signals or other factors.

9.2.2The operator shall provide crew flight reports and automatic flight recording
data during all the operational demonstrations. The flight crew reports should
provide at least the following data:

i) Airfield and runway used;

ii) Weather conditions;
iii) Time;
iv) Adequacy of speed control;
v) Any out-of-trim condition at time of Automatic Flight Control System
disengagement;
vi) Compatibility of Automatic Flight Control Systems, Flight Director
and raw data;
vii) Indication of the position of the aircraft relative to the ILS
centreline when descending through 100 ft (30m);
viii) Touchdown position;
ix) Reason for failure leading to aborted approach, give height above
runway at which approach, was discontinued; and
x) Quality of overall system performance.
The automatic flight recordings shall provide at least the following:
i) Deviation from localizer at touchdown;
ii) Flare time;
iii) Rate of descent at touchdown;
iv) Pitch and bank angles at touchdown;
v) Speed loss in flare; and
vi) Maximum deviation during ground roll-out (for aircraft with
automatic ground roll control or guidance intended for
operations with no DH).

9.2.3 The operator shall develop a form for use by the flight crew to record the data
listed above. A sample proforma for crew reports is given at Annexure-I. This
form shall be completed whenever an approach is attempted utilising the
airborne low visibility approach system regardless of whether it is initiated,
abandoned or concluded successfully. A successful approach is one in which
at 100 feet point :

i) The airplane is in trim so as to allow for continuation of normal

approach and landing.
ii) The indicated airspeed and heading are satisfactory for a normal
flare and landing. With auto throttle control system, the speed

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must be + 5 knots of programmed airspeed but may not be less

than computed threshold speed.
iii) The airplane is positioned so that the cockpit is within, and tracking
so as to remain within, the lateral confines of the runway extended.
iv) Deviation from glideslope does not exceed + 75 microamps as
displayed on the ILS indicator. The Operator may specify the
equivalent scale deviation for their type of aircraft in consultation
with the aircraft manufacturer.
v) No unusual roughness or excessive attitude changes occur after
leaving middle marker.
vi) No unusual deviation in the touchdown or touchdown and roll out
performance.
9.2.4 During the six months period following the issuance of initial Operations
Specifications to conduct Cat-II operations (as mentioned in para 9.1), the
operator, when practicable, shall use the Cat-II airborne system using the
operator's operating and maintenance procedures. During this period, pilot
reports shall be obtained for each approach with the data described above.
These reports shall be analysed and a summary report prepared and submitted
to DGCA. This report shall show that, at least 95% of approaches made during
this period were successful.

9.3 Issuance of Standard Cat-II Operations Specifications

After successful completion of six months of operations under initial Operations

Specifications and at least one hundred approaches as indicated in para 9.2.1
above, the operator shall be issued revised Standard Operations Specifications
authorising him to carry out Cat-II operations with a Decision
Height of 100 feet and RVR of 350 m.

9.4 Issuance of Initial Cat-IIIA/B Operations Specifications

Operator shall be issued an initial Operations Specifications to carry out Cat-

IIIA/B operations with Decision Height of 100 feet and RVR of 300 metres after
ensuring that operator has prepared all the required documents, procedures,
maintenance and training programmes and the flight crew have been trained
and the operator has also successfully acquired six months experience of Cat-
II operations and issued standard Operations Specifications for such
operations.

9.5 Operational Demonstration for Cat-IIIA/B Operations

9.5.1 The operator shall then carry out operational demonstration, in order to
establish that an appropriate level of safety can be met in such operations.
The operator shall prove that he can perform Cat-IIIA/B operations with the
appropriate success rate and level of safety. For this purpose, he must
carry out in-service proving for a period of six months. Particular attention
shall be given to the flight and maintenance procedures as established by
the operator. During this period, the

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operator shall successfully complete the following operations

demonstrations and data collection programme in line service as part of
the approval process to ensure continued performance and reliability of the
system before operations down to the next succeeding lower minima are
authorised:

(i) For operational demonstration of airborne system, one hundred

successful landings are to be accomplished in line operations,
including training flights, using Cat-IIIA/B system. The system
should demonstrate reliability and performance in line
operations consistent with the operational concepts.

(ii) For collection of data during airborne system demonstration, the

applicant shall provide crew flight reports and automatic flight
recording data in accordance with the proforma given at
Annexure-I giving approach and landing performance whenever
an approach and landing is attempted utilising the Cat-IIIA/B
system, regardless of whether the approach is abandoned or
concluded successfully. The completed forms and a summary
of the demonstration results will be made available to DGCA.

(iii) Approaches where the pilot was assured that the critical area
protection was provided which do not result in a successful
landing, are to be fully documented giving factors which result
in unsuccessful approaches e.g. due to ATC factors, faulty
ground station signals or other factors.

9.5.2 During operational demonstrations of Cat-IIIA/B operations, the operator

shall provide crew flight reports and automatic flight data recording in
accordance with para 9.2.2 and 9.2.3.

9.5.3 During the six month period following the issuance of initial Operations
Specifications to conduct Cat-IIIA/B operations, the operator, when
practicable, shall use the Cat-IIIA/B airborne system using the operator's
operating and maintenance procedures. During this period, pilot reports
shall be obtained for each approach with the data described above.
These reports shall be analysed and a summary report prepared and
submitted to DGCA. This report shall show that, 95% of approaches made
during this period were successful.

9.6 Issuance of Standard Cat-IIIA/B Operations Specifications

After successful completion of six months of operations under initial Cat-IIIA/B

Operations Specifications and at least one hundred approaches as indicated in
para 9.5.1, the operator shall be issued a final Operations Specifications
authorising him Cat-IIIA/B operations with a Decision Height less than 50 ft or
No Decision Height and RVR of 50 m.

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9.7 Introduction of New Type of Aircraft for Experienced Operators

Whenever an operator introduces a new type of aircraft into service for Cat-II
or Cat-IIIA/B operations, a complete operational demonstration as stipulated in
above paras shall be carried out. This demonstration process will follow the
same basic sequence. It consists of a progressive introduction of lower minima
with periodic reports of the approaches made during actual in-line service
leading to amendment of Operations Specifications.

10. CONTINUOUS MONITORING

After obtaining the authorisation, the operator must continue to provide

quarterly reports of in-line service. These reports must include the following
information:

i) The total number of approaches, by aircraft type, where the airborne Cat-II
or Cat-IIIA/B equipment was utilised to make satisfactory, actual or practice,
approaches to the applicable Cat-II or Cat-IIIA/B minima.
ii) The total number of unsatisfactory approaches by aerodrome and aircraft
registration-wise in the following categories.
a) Airborne equipment faults;
b) Ground facility difficulties;
c) Missed approaches because of ATC instructions; and
d) Other reasons.

iii) The operator shall establish a procedure to monitor the performance of the
Automatic Landing System of each aircraft. The continuous monitoring shall
permit the detection of any decrease in the level of safety before it becomes
hazardous. The operator shall continue to check his results and to take
adequate actions by modifying the operating or maintenance procedures, if
necessary. The monitoring shall also permit problems to be detected on a
specified airfield (ILS, ATC procedures, etc.). The monitoring shall be
continuous and data shall be retained for a period of at least 1 year.

11. GENERAL REQUIREMENTS

(i) No operator shall carry out Cat-II or Cat-IIIA/B operations without specific
approval of DGCA and unless each aircraft concerned is equipped and
certified for operations with decision height below 60m (200 ft).

(ii) Every operator shall file with the DGCA, minima for every airport for Cat-II
and Cat-IIIA/B operations keeping in view the requirements contained in
ICAO Manual of All Weather Operations and the operator's experience and
policy.

Rev 1, 14th September 2009 14

CIVIL AVIATION REQUIREMENTS SECTION 8
SERIES ‘B’ PART I 30TH MARCH 2001
(iii) An operator shall verify that Low Visibility Procedure (LVP) have been
established and are enforced at those aerodromes where low visibility
operations are to be conducted.

(iv) Every operator shall establish and maintain a suitable system for recording
success and failure of approach and automatic landing to monitor the overall
safety of the operation.

(v)Each operator must have sufficient qualified personnel to continuously

monitor and ensure the highest degree of safety in Cat-II and Cat-IIIA/B
operations. The operator should provide necessary training to the ground
staff directly involved with flight operations.

(vi) The authorisation granted to an operator for conducting Cat-II/IIIA/B

operations shall be valid only if the requirements contained in this CAR are
complied with and the capability of the operator, its flight crew and aircraft
does not degrade below the required level.

(vii) The authorisation is liable to be cancelled/suspended/ withdrawn/modified

at any time in the event of any of the above conditions not being complied
with and/or violated by the operator and for reasons affecting safety of
aircraft operations.

12. FEES

Fees for CAT II & CAT III operator authorisation on first aircraft type with
the operator shall be Rs Ten Thousand only.

(B. S. Bhullar)
Director General of Civil Aviation

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CIVIL AVIATION REQUIREMENTS SECTION 8
SERIES ‘B’ PART I TH
30 MARCH 2001
SAMPLE FORM FOR FLIGHT CREW REPORT ON AUTO-APPROCAH
AND AUTO-LAND PERFORMANCE
OPERATOR ____________________________

1. SECTION I – Complete all items

Aircraft Type Aircraft Captain Flight No. Date
Registration
No.

Airport Runway Conditions Wind ATC runway

Direction & Protection provided
Speed
Cat I+ Unknown
or None
Cat II
Cat II
Cat IIIA/B
The Auto-Approach Auto-Land was:

Satisfactory Unsatisfactory

If unsatisfactory you must complete Section II

Auto-Land Touchdown Zone is 900 feet to 2400 feet down
the runway and within 27 feet of centerline.

Record area of touch down with an ‘X’ on Runway Depiction

2. SECTION II – Complete ONLY if Auto-Approach or Auto-
Land was UN-SATISFACTORY. 2500 ft
If the Approach was discontinued, it was due to:
F Airborne Equipment Failure
F Ground Facilities Difficulties F
2000 ft
ATC Instructions
F Other (Specify)
1500 ft
LOCALIZER (Left/Right) GLIDESLOPE (High/Low)
OUTER MIDDLE INNER
1000 ft
L H L H L H

R L R L R L
If the autopilot was disconnected the altitude was ________ft 500 ft
MSL.
Other Comments Threshold
marker

(Commander’s Signatures)

Rev 1, 14th September 2009 16