AED 201 INTRODUCTION TO AEROSPACE SYSTEMS 1

LICENSE, QUALIFICATION AND EXAMINATION

INTRODUCTION

 An aircraft maintenance license is the most important document in aviation maintenance, an individual who carries a license is adjudged to
have acquired the necessary training, skills and experience which he/she will apply using the highest standards to improve safety on each and
every aircraft he/she carry out scheduled and unscheduled maintenance tasks.

DEFINITIONS

Approved Maintenance Organization (AMO).

 An organization approved by the Authority, in accordance with Nigeria CARs Part 6, to perform specific aircraft maintenance activities
by the Authority. An example is 7Star Global Hangar in Lagos that got approval to carry out HM in Nigeria.

These activities may include the inspection, overhaul, maintenance, repair and/or alteration and release to service of aircraft or aeronautical products.

 Approved Training Organization (ATO).

 An organization approved by the Authority, in accordance with Nigeria CARs Part 3, to perform flight crew training and other training approved by
the Authority.
➢ Authority.
The civil aviation authority responsible for the oversight of civil aviation in Nigeria.
➢ Certifying staff.
Those personnel who are authorized by the Approved Maintenance Organization in accordance with a procedure acceptable to the Authority to certify
aircraft or aircraft components for release to service.

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➢ Directly in Charge.
As applied to an Approved Maintenance Organization in Part 6 -
Means an appropriately licensed person having the responsibility for the work of an approved maintenance organization that performs
Maintenance, preventive maintenance, alterations, or other functions affecting aircraft airworthiness.
A person directly in charge does not need to physically observe and direct each worker constantly but must be available for consultation on matters
requiring direct instruction or decision from higher authority.

CATEGORIES
➢Aircraft Maintenance Engineer
➢Inspection Authorization
➢Aircraft Repair Specialist

RATINGS
(1) Airframe.
(2) Power plant.
(3) Avionics.
(4) Other ratings as may be determined by the Authority.

The following AME type ratings are issued as subparts

(1) Airframe type ratings for aircraft with a take-off gross weight of more than 5700 kg.
(2) Power plant type ratings for power plant on aircraft with a take-off gross weight of more than 5700 kg.
(3) Other specialized ratings as may be determined by the Authority.

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EXPERIENCE REQUIREMENTS

An applicant for an AME license and associated ratings may qualify by either practical experience or through completion of approved training in
an ATO.
Practical experience.

Each applicant for an AME license and rating(s) relying on practical experience shall provide documentary evidence, acceptable to the Authority, of the
following experience in the inspection, servicing and maintenance of aircraft or its components—

(1) Airframe rating – 30 months.

(2) Power plant rating – 30 months.
(3) Airframe and Power plant ratings – 48 months.
(4) Avionics rating – 36 months.
(5) Airframe, Power plant and Avionics ratings – 60 months.

Approved Training.
Each applicant for an AME license relying on completion of training in an
Approved Training Organization shall provide documentary evidence, acceptable to the Authority, of the following training:
(1) Airframe rating – 24 months.
(2) Power plant rating – 24 months.
(3) Airframe and Power plant ratings – 30 months.
(4) Avionics rating– 18 months in an ATO and 12 months practical work experience.
(5)
aircraft Airframe, Power
maintenance plantlicense,
engineer and Avionics ratings
including – 42 months
requirements in an to
applicable ATO and 12
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plant ratings, experience. The with
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to obtaining for a full

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RIVILEGES AND LIMITATIONS

A licensed AME may perform or supervise the maintenance, preventive maintenance, or modification of, or after inspection, approve for return to service, any
aircraft, airframe, aircraft engine, propeller, appliance, component, or part thereof, for which he or she is rated, provided the licensed AME has—

(1) Satisfactorily performed the work at an earlier date;

(2) Demonstrated the ability to perform the work to the satisfaction of the Authority;
(3) Received training acceptable to the Authority on the tasks to be performed; or
(4) Performed the work while working under the direct supervision of a licensed AME or a licensed
Aviation repair specialist who is appropriately rated and has—
(i) Had previous experience in the specific operation concerned; or
(ii) Received training acceptable to the Authority on the task to be performed.

A licensed AME with an airframe rating may after he/she has performed the 100-hour inspection required by Part 8 of these Regulations on an airframe, or any
related part or appliance, and approve and return it to service.

A licensed AME with a power plant rating may perform the 100-hour inspection required by the Regulations on a power plant or propeller or any related
part or appliance, and approve and return it to service.

A licensed AME with an Avionics rating may inspect, repair, maintain, function test and return to service aircraft avionics systems and components.
An AME with an airframe or power plant or avionics rating may not-
(1)Supervise the maintenance, preventive maintenance, or modification of, or approve and return to service, any aircraft, airframe, aircraft engine, propeller,
appliance, component, or part thereof, for which he/she is rated unless he/she has satisfactorily performed the work concerned at an earlier date.
(2) Exercise the privileges of the license unless the licensed AME understands
the current instructions for continued airworthiness and the maintenance instructions for the specific operation concerned.
(3) Perform a major repair or major modification of a propeller.

DURATION OF AME LICENSE

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Validity. The duration of the AME license is five years.

Renewal – An AME license that has not expired may be renewed for an additional 5 years if the holder presents evidence to the Authority that he/she has
within the past 24 months has exercised the privileges of the license.
Re-issue- If the AME license has expired, the applicant shall have received refresher training acceptable to the Authority.

RECENT EXPERIENCE REQUIREMENTS

(a)A licensed AME may not exercise the privileges of his/her license or rating unless, within the preceding 24 months —

(1)The Authority has found that he/she is able to do that work; or

(2) For at least 6 months within the preceding 24 months—
(i) Served as an AME under his/her license and rating; (ii) Technically supervised other AMEs;
(iii) Provided aviation maintenance instruction or served as the direct supervisor of persons providing aviation maintenance instruction for an AME course
or program acceptable to the Authority;
(iv) Supervised the maintenance, preventive maintenance, or alteration of any aircraft, airframe, aircraft engine, propeller, appliance, component, or
part thereof

DISPLAY OF LICENSE

Each person who holds an AME license shall keep it within the immediate area where he/she normally exercises the privileges of the license
and shall present it for inspection upon the request of the Authority or an authorized representative of the Director General, or any Federal, State, or local law
enforcement officer.

INSPECTION AUTHORISATION: DURATION

Each inspection authorization expires on June 30 of each year.
An inspection authorization ceases to be effective whenever any of the following occurs:

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(1) The authorization is surrendered, suspended, or revoked.

(2) The holder no longer has a fixed base of operation.
(3) The holder no longer has the equipment, facilities, and inspection data required by the authority
(c) The holder of an inspection authorization that is suspended or revoked shall return it to the Authority.
PRIVILEGES AND LIMITATIONS
The holder of an Inspection Authorization (IA) with a current and valid AME license may:
Inspect and approve for return to service any aircraft, airframe, aircraft engine, propeller appliance, component, or part thereof on any aircraft with a 5,700 kg
maximum take-off weight or less, after completion of a major repair or major alteration performed in accordance with technical data approved by the
Authority.

Perform an annual inspection, or perform or supervise a progressive inspection, according to Part 5, on any aircraft with a 5,700 kg maximum take-off weight or
less, except those aircraft on a continuous maintenance program, and approve the aircraft for return to service.
The holder of an IA with a current and valid AME license may not:
Exercise the privileges of the authorization unless he or she holds a current and valid AME license with airframe and power plant ratings.
Inspect and approve for return to service any aircraft over 5,700 kg maximum take-off weight.

Inspect and approve any airframe, aircraft engine, propeller, appliance, component, or part thereof which is subject to a maintenance
program.
Inspect and approve for return to service any aircraft maintained in accordance with a continuous maintenance program.
Exercise any privilege of an Inspection Authorization whenever that person no longer—
(i) Has a fixed base of operation; and (ii) Has access to the equipment, facilities, or inspection data required.

Exercise the privileges of the authorization until he or she has notified the Authority in writing of any changes in the fixed base of operation and
equipment, facilities or inspection data and received approval in writing from the Authority for the proposed change.

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AIRCRAFT REPAIR SPECIALIST

An applicant for an aircraft repair specialist license shall—
(1) Be at least 18 years of age.
(2) Demonstrate the ability to read, write, speak, and understand the English language, by reading and explaining appropriate maintenance publications
and by writing defect and repair statements.
(3) Demonstrate a level of knowledge relevant to the privileges to be granted and appropriate to the duties to be performed.

(4) Be specially qualified to perform maintenance on aircraft or components thereof, appropriate to the job for which he/she was employed.
.
(5) Be employed for a specific job requiring those special qualifications by an approved maintenance organization certificated under Part 6 or an air
operator certificated under Part 9 of these regulations that is required by its operating certificate or approved specific operating
provisions to provide maintenance, preventive maintenance, or modifications to aircraft approved with a continuous maintenance program according to its
maintenance control manual.
(6) Be recommended for certification by his employer, to the satisfaction of the Authority, as able to satisfactorily maintain aircraft or components,
appropriate to the job for which he is employed
(7) Have either of the following:
(i) At least 24 months of practical experience in the procedures, practices, inspection methods, materials, tools, machine tools, and equipment
generally used in the maintenance duties of the specific job for which the person is to be employed and certificated; or
(ii) Completed formal training that is acceptable to the Authority and is specifically designed
to qualify the applicant for the job on which the applicant is to be employed.

AIRCRAFT REPAIR SPECIALIST RATINGS

➢ Propeller.
➢ Computer.
➢ Instrument.
➢ Accessory.

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➢ Components.
➢ Welding.
➢ Non-destructive Testing (NDT).

➢ Other as may be designated by the Authority.

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