66.A.01 Scope
CAR-66 · page 12
PassCARs summary (not official text): Defines what CAR-66 covers: the aircraft maintenance engineer’s (AME) licence and the requirements for applying for it, its issue and its validity.
Official text (excerpt)
66. A.01 Scope This section defines the aircraft maintenance engineer’s licence and establishes therequirements for application, issue and conditions of its validity
Excerpt from CAR-66 — Licensing of Aircraft Maintenance Engineers (CAR Section 2, Series L), Issue III, Revision 2 · 2025-09-29, page 12. Read it in context in the official document ↗.
66.A.03 Licence categories
CAR-66 · page 12
PassCARs summary (not official text): Lists the CAR-66 licence categories: A (A1–A4), B1 (B1.1–B1.4), B2, B2L (with system ratings), B3, L (L1C–L5) and C.
Official text (excerpt)
66. A.03 Licence categories
(a) Category A, divided into the following subcategories:
- A1 Aeroplanes Turbine;
- A2 Aeroplanes Piston;
- A3 Helicopters Turbine;
- A4 Helicopters Piston.
(b) Category B1, divided into the following subcategories:
- B1.1 Aeroplanes Turbine;
- B1.2 Aeroplanes Piston;
- B1.3 Helicopters Turbine;
- B1.4 Helicopters Piston.
(c) Category B2, applicable to all aircraft.
(d) Category B2L Category B2L shall be issued with the ‘system rating’ for aircraft other than those in Group 1 (66.A.05(1)) as specified below:
- Communication/Navigation (Com/Nav),
- Instruments,
- Autoflight,
- Surveillance,
- Airframe systems.
A B2L licence shall contain, as a minimum, one system rating.
(e) Category B3 Category B3 licence is applicable to piston-engine non-pressurised aeroplanes of 2 000 kg Maximum Take-off Mass (MTOM) and below.
(f) Category L, divided into the following subcategories:
- L1C: composite sailplanes;
- L1: sailplanes;
- L2C: composite powered sailplanes and composite Light Aircraft 1 (LA1) aeroplanes;
- L2: powered sailplanes and Light Aircraft 1 (LA1) aeroplanes;
- L3H: hot-air balloons;
- L3G: gas balloons;
- L4H: hot-air airships;
- L4G: Light Aircraft 2 (LA2) gas airships; and
- L5: gas airships other than Light Aircraft 2 (LA2).
(g) Category C, applicable to aeroplanes and helicopters.
Excerpt from CAR-66 — Licensing of Aircraft Maintenance Engineers (CAR Section 2, Series L), Issue III, Revision 2 · 2025-09-29, page 12. Read it in context in the official document ↗.
66.A.05 Aircraft groups
CAR-66 · page 14
PassCARs summary (not official text): For licence ratings, aircraft are classified into Group 1 (complex motor-powered aircraft and similar), Group 2 (sub-groups 2a–2c), Group 3 (piston aeroplanes) and Group 4 (sailplanes, balloons, airships).
Official text (excerpt)
66. A.05 Aircraft groups For the purpose of ratings on aircraft maintenance engineers licences, aircraft shall be classified in the following groups:
1. Group 1: Complex motor-powered aircraft; multi-engine helicopters; other than piston-engine aeroplanes, with maximum certified operating altitude exceeding FL290; aircraft equipped with fly-by-wire systems; gas airships other than LA2.
DGCA may decide to classify into Group 2, Group 3 or Group 4, as appropriate, an aircraft which meets the conditions set out in the first subparagraph, if it considers that the lower complexity of the particular aircraft justifies so.
2. Group 2: aircraft other than those in Group 1 belonging to the following subgroups:
i. sub-group 2a:
• single turbo-propeller engine aeroplanes
• those turbine-engine aeroplanes classified by DGCA in this subgroup because of their lower complexity ii. sub-group 2b:
• single turbine engine helicopters
• those multiple turbine engine helicopters classified by DGCA in this subgroup because of their lower complexity.
iii. sub-group 2c:
• single piston engine helicopters.
• those multiple piston engine helicopters classified by DGCA in this subgroup because of their lower complexity.
3. Group 3: piston engine aeroplanes other than those in Group 1.
4. Group 4: sailplanes, powered sailplanes, balloons and airships, other than those in Group 1.
Excerpt from CAR-66 — Licensing of Aircraft Maintenance Engineers (CAR Section 2, Series L), Issue III, Revision 2 · 2025-09-29, page 14. Read it in context in the official document ↗.
66.A.10 Application
CAR-66 · page 16
PassCARs summary (not official text): A licence application (or change) is made on CA Form 19 through eGCA with supporting documents and fees; it must evidence the knowledge, training and experience requirements.
Official text (excerpt)
66. A.10. Application
a) An application for an aircraft maintenance engineer’s licence or change to such licence shall be made on CA Form 19 (Refer Appendix-V) (through eGCA) with necessary documents and fees to DGCA.
b) Reserved.
c) In addition to the documents required in points 66.A.10 (a) as appropriate, the applicant for any change to an existing aircraft maintenance engineer’s licence shall submit his/her current original aircraft maintenance engineer’s licence to the DGCA together with application.
d) Reserved
e) Reserved
f) Each application shall be supported by documentation to demonstrate compliance with the applicable theoretical knowledge, practical training and experience requirements at the time of application.
Excerpt from CAR-66 — Licensing of Aircraft Maintenance Engineers (CAR Section 2, Series L), Issue III, Revision 2 · 2025-09-29, page 16. Read it in context in the official document ↗.
66.A.15 Eligibility
CAR-66 · page 17
PassCARs summary (not official text): Applicants must have passed 10+2 in Physics, Chemistry and Mathematics (or equivalent) and be at least 18 years old.
Official text (excerpt)
66. A.15.Eligibility
a) The applicant must have passed 10+2 examination in Physics, Chemistry and Mathematics from a recognized board or university or its equivalent
b) An applicant for an aircraft maintenance engineer’s licence shall be at least 18 years of age.
Excerpt from CAR-66 — Licensing of Aircraft Maintenance Engineers (CAR Section 2, Series L), Issue III, Revision 2 · 2025-09-29, page 17. Read it in context in the official document ↗.
66.A.20 Privileges
CAR-66 · page 17
PassCARs summary (not official text): Sets out the certification privileges of each licence category and the conditions (including recent experience) before privileges may be exercised.
Official text (excerpt)
66.A.20 Privileges
a) The following privileges shall apply:
1. Category A licence holder to issue certificates for release to service after minor scheduled line maintenance and simple defect rectification within the limits of maintenance tasks specifically endorsed on the authorisation issued by a maintenance organisation approved under rule 133B and the certification privileges shall be restricted to the work carried out by the licence holder himself in the maintenance organization that issues the authorisation.
2. Category B1 licence holder to issue certificates for release to service and to act as support staff following the maintenance performed on aircraft structure, power- plant, mechanical and electrical systems; work on avionics system requiring simple tests to prove their serviceability and not requiring trouble shooting, in respect of an aircraft type endorsed on the licence.
NOTE: Category B1 shall include the appropriate sub-category of Category A;
3. Category B2 licence holder to issue ―
(a) certificates of release to service and to act as support staff after maintenance on avionic and electrical systems; avionics and electrical task within powerplant and mechanical systems requiring only simple tests to prove their serviceability of aircraft type endorsed on the licence;
(b) certificates of release to service after minor scheduled line maintenance and simple defect rectification within the limits of tasks specifically endorsed on the certification authorisation issued by an approved maintenance organisation of aircraft type endorsed on the licence and this certification privilege shall be restricted to work that the licence holder has personally performed in the maintenance organisation which issued the certification authorisation and limited to the rating already endorsed on the licence.
Note: The category B2 licence does not include any A sub-category.
4. Category B2L licence holder to issue certificates of release to service and to act as B2L support staff for maintenance performed on electrical systems; maintenance performed on avionics systems within the limits of the system ratings specifically endorsed on the licence, and when holding the ‘airframe system’ rating, performance of electrical and avionics tasks within power plant and mechanical systems, requiring only simple tests to prove their serviceability.
5. Category B3 licence holder to issue certificates of release to service and to act as B3 support staff for maintenance performed on aeroplane structure, engine and mechanical and electrical systems; and work on avionic systems requiring only simple tests to prove their serviceability and not requiring troubleshooting not requiring troubleshooting of ‘piston-engine non-pressurised aeroplanes of 2000 kg Maximum Take-off Mass and below’.
6. Category L licenceholder to issue certificates of release to service and to act as category L support staff for the maintenance performed on aircraft structure, power plant and mechanical and electrical systems; work on radio, Emergency Locator Transmitters (ELT) and transponder systems; and work on other avionics systems requiring simple tests to prove their serviceability.
Note1: Subcategory L2 includes subcategory L1. Any limitation to subcategory L2 in accordance with point 66.A.45 (h) becomes also applicable to subcategory L1.
Note2: Subcategory L2C includes subcategory L1C.
7. Category C licence holders to issue certificates of release to service following base maintenance in respect of an aircraft of the type endorsed on the licence. The privileges apply to the aircraft in its entirety including all systems.
NOTE―Simple test means a test described in approved maintenance data and such in nature that aircraft system serviceability is verified through aircraft controls, switches, Built-in Test Equipment (BITE), Central Maintenance Computer (CMC) or external test equipment not requiring special training.” ;
b) The holder of Aircraft Maintenance Engineer license may not exercise certification privileges unless:
1. in compliance with the applicable requirements of CAR M, CAR –ML, CAR – CAO and/or CAR 145 ; and
2. in the preceding two year period he/she has either acquired six months of maintenance experience in accordance with the privileges granted by the Aircraft Maintenance Engineer’s Licence or met the provision for the issue of appropriate privileges; and
3. he/she has the adequate competence to certify maintenance on the corresponding aircraft; and
4. he/she is able to read, write and communicate to an understandable level in the language(s) in which the technical documentation and procedures necessary to support the issue of the certificate of release to service are written.
Excerpt from CAR-66 — Licensing of Aircraft Maintenance Engineers (CAR Section 2, Series L), Issue III, Revision 2 · 2025-09-29, page 17. Read it in context in the official document ↗.
66.A.25 Basic knowledge requirements
CAR-66 · page 25
PassCARs summary (not official text): Basic knowledge is demonstrated by DGCA-conducted module examinations to the Appendix I/II standard; module passes are valid for 10 years, with credits possible under APM Chapter 17.
Official text (excerpt)
66. A.25 Basic Knowledge requirements:
a) The applicant for an aircraft maintenance licence shall demonstrate by examination a level of knowledge of the related subject modules in accordance with Appendix I (applicable to category A, B1, B2, B2L, B3 and C licences) or Appendix VII (applicable to category L licences).
b) The basic knowledge examinations shall comply with the standard set out in Appendix II(applicable to category A, B1, B2, B2L, B3 and C licences) or Appendix VIII (applicable to category L licences) to this CAR and shall be conducted by DGCA.
c) The training courses and examinations shall be passed within 10 years prior to the application for an aircraft maintenance licence or the addition of a category or subcategory to such aircraft maintenance licence. Should this not be the case, examination credits may however be obtained in accordance with point (d).
The 10 years’ validity requirement applies to each individual module examination, except for those module examinations which were already passed as part of another licence category and the licence has already been issued.
d) The applicant may apply to DGCA for full or partial examination credit to the basic knowledge requirements for
1. basic knowledge examinations that do not meet the requirement described in point (c) above;
and
2. any other technical qualification considered by DGCA to be equivalent to the knowledge standard of CAR-66 Credits shall be granted in accordance with APM Chapter 17.
e) Credits expire 10 years after they were granted to the applicant by DGCA. The applicant may apply for new credits after expiration.
f) The holder of an aircraft maintenance licence applying for the addition of a different category or subcategory shall complement by examination the level of knowledge that is appropriate to the related subject modules in accordance with Appendix I (for category A, B1, B2, B2L, B3 and C licences) or Appendix VII (for category L licences).
Appendix IV details the modules of Appendix I (for category B1, B2, B2L, B3 and C licences) or Appendix VII (for category L licences) required for the addition of a new category or subcategory to an existing licence issued in accordance with this CAR
Excerpt from CAR-66 — Licensing of Aircraft Maintenance Engineers (CAR Section 2, Series L), Issue III, Revision 2 · 2025-09-29, page 25. Read it in context in the official document ↗.
66.A.30 Basic experience requirements
CAR-66 · page 26
PassCARs summary (not official text): Minimum practical maintenance experience by category, reduced for an engineering/aircraft-maintenance degree or approved basic training (rule 133B), with recency and 10-year limits.
Official text (excerpt)
66. A.30 Basic Experience requirements:
a) An applicant for an aircraft maintenance engineer’s licence shall have acquired:
1. for category A, sub categories B1.2 and B1.4 and category B3:
(i) three years of practical aircraft maintenance experience on operating aircraft; or
(ii) two years of practical maintenance experience on operating aircraft and having acquired a Degree in Aircraft Maintenance or Degree in Engineering from a recognised University; or
(iii) one year of practical maintenance experience on operating aircraft and having successfully completed basic aircraft maintenance training conducted by a training organisation approved under rule 133B.
2. for sub-categories B1.1 and B1.3 and category B2:
(i) five years of practical aircraft maintenance experience on operating aircraft; or
(ii) three years of practical maintenance experience on operating aircraft and having acquired a Degree in Aircraft Maintenance or Degree in Engineering from a recognised University; or
(iii) two year of practical maintenance experience on operating aircraft, and having successfully completed basic aircraft maintenance training conducted by a training organisation approved under rule 133B.
3. for category B2L:
(i) three years of practical maintenance experience in operating aircraft, covering the corresponding system rating, if the applicant has no previous relevant technical training; or
(ii) two years of practical maintenance experience on operating aircraft, covering the corresponding system rating, and having acquired a Degree in Aircraft Maintenance or Degree in Engineering from a recognised University; or
(iii) one year of practical maintenance experience on operating aircraft, covering the corresponding system rating, and having successfully completed basic aircraft maintenance training conducted by a training organisation approved under rule 133B.
Note: For the addition of new system rating(s) to an existing B2L licence, 3 months of practical maintenance experience relevant to the new system rating(s) shall be required for each system rating added.
4. for category L:
(i) two years of practical experience in operating aircraft covering a representative cross section of maintenance activities in the corresponding sub-category; or
(ii) one years of practical maintenance experience on operating aircraft, covering the corresponding system rating, and having acquired a Degree in Aircraft Maintenance or Degree in Engineering from a recognized University or successfully completed basic aircraft maintenance training conducted by a training organisation approved under rule 133B:
Note: For the inclusion of an additional subcategory in an existing L licence, the experience required by points (i) and (ii) shall be 12 and 6 months respectively.
5. for Category C with respect to complex motor-powered aircraft (CMPA):
(i) three years of maintenance experience in exercising privileges of categories B1.1, B1.3 or B2 as support staff, or both support staff and certifying staff, in a maintenance organisation approved under rule 133B working on CMPA, including 12 months of experience as base maintenance support staff; or
(ii) five years of maintenance experience in exercising privileges of categories B1.2, B1.4 or L5 as support staff, or both support staff and certifying staff, in a maintenance organisation approved under rule 133B working on CMPA, including 12 months of experience as base maintenance support staff;
6. for Category C with respect to aircraft other than complex motor powered aircraft (CMPA), three years of maintenance experience in exercising privileges of categories B1 or B2 or support staff, in a maintenance organisation approved under rule 133B, working on aircraft other than complex motor powered aircraft, including 6 months of experience as base maintenance support staff.
b) An applicant for the addition of a category or a sub-category to an existing licence shall have a minimum civil aircraft maintenance experience requirement appropriate to the additional category or sub-category of licence applied for as defined in Appendix IV to CAR 66.
c) The experience shall be practical and involve with a representative cross section of maintenance tasks on aircraft.
d) At least one year of the required experience shall be recent maintenance experience on aircraft of the category/subcategory for which the initial aircraft maintenance engineer’s licence is sought. For subsequent category /subcategory additions to an existing aircraft maintenance engineer’s licence, the additional recent maintenance experience required may be less than one year, but shall be at least three months. The required experience shall be dependent upon the difference between the licence category/subcategory held and applied for. Such additional experience shall be typical of the new licence category/subcategory sought.
Note: ‘Recent maintenance experience’ shall be acquired on the type of aircraft for which the aircraft maintenance engineer’s license is sought.
e) Notwithstanding para (a), the twelve years of practical aircraft maintenance experience acquired outside a civil aircraft maintenance environment in the relevant category supplemented by at least one year of recent experience in civil aircraft maintenance environment, shall be treated as equivalent to the requirements laid down in sub paras (1) to (4) of para (a) above.
f) Experience shall have been acquired within the 10 years preceding the application for an aircraft maintenance licence or the addition of a category or subcategory to such a licence.
Notwithstanding to this, the aircraft maintenance experience gained in defense environment in the preceding fifteen years shall be acceptable.
Excerpt from CAR-66 — Licensing of Aircraft Maintenance Engineers (CAR Section 2, Series L), Issue III, Revision 2 · 2025-09-29, page 26. Read it in context in the official document ↗.
66.A.35 Demonstration of skill
CAR-66 · page 30
PassCARs summary (not official text): Applicants must demonstrate maintenance skill for each category/sub-category or aircraft type applied for, in accordance with 66.A.45.
Official text (excerpt)
66. A. 35 Demonstration of Skill An applicant for grant or extension of Aircraft Maintenance Engineer’s licence shall demonstrate his aircraft maintenance skill in respect of each category or sub-categoryof license or specific type of aircraft or systems in accordance with CAR 66.A.45 for which the application has been made to the Director General
Excerpt from CAR-66 — Licensing of Aircraft Maintenance Engineers (CAR Section 2, Series L), Issue III, Revision 2 · 2025-09-29, page 30. Read it in context in the official document ↗.
66.A.40 Continued validity of the AME licence
CAR-66 · page 30
PassCARs summary (not official text): The licence must be renewed (CA Form 19-03 via eGCA); expired licences can be renewed for up to four years with recent-experience evidence.
Official text (excerpt)
66. A.40 Continued validity of the aircraft maintenance engineer’s licence
(a) The aircraft maintenance engineer’s licence becomes invalid after five years or ten years (under revised Aircraft Rule 61) after its last issue or renewal, unless the holder submits his/her aircraft maintenance engineer’s licence to DGCA, in order to verify the information contained in the licence is the same as that contained in DGCA records.
(b) The holder of an aircraft maintenance engineer’s licence shall complete the CA Form 19-03 (Refer Appendix-V) (through eGCA) and submit it with the holder’s copy of the licence to DGCA, unless the holder works in a maintenance organization approved in accordance with CAR 145 or CAR-CAO that has a procedure in its exposition where by such organisation may submit the necessary documentation on behalf of the aircraft maintenance engineer’s licence holder.
(c) Any certification privileges based upon an aircraft maintenance engineer’s licence becomes invalid as soon as the aircraft maintenance engineer’s licence is invalid.
(d) The aircraft maintenance engineer’s licence is only valid when issued and/or changed by DGCA and when the holder has signed the document.
(e) An application to renew a licence that has expired will be accepted for up to four years after the date of expiry of the licence. The applicant is required to submit certified evidence of 6 months actual aircraft experience relevant to the category held within the 24 months prior to their application and that he has not exercised the privileges of his licence during this period.
In case, the privileges have been exercised, necessary enforcement action shall be initiated.
Such licence shall be considered for renewal only after enforcement action is complete.
In case the applicant does not meet minimum 6 months experience criteria, he should be advised to apply for renewal after acquiring 6 month maintenance experience.
Licences expired for more than four years will not be renewed and applicants will need to meet all of the applicable requirements for the issue of a licence in accordance with this CAR.
Note: For the purpose of renewal of a DGCA CAR-66 Aircraft Maintenance Engineer’s Licence only, maintenance experience acquired on foreign-registered aircraft within a foreign maintenance organization approved by EASA/ FAA etc , may be considered.
Excerpt from CAR-66 — Licensing of Aircraft Maintenance Engineers (CAR Section 2, Series L), Issue III, Revision 2 · 2025-09-29, page 30. Read it in context in the official document ↗.
66.A.55 Evidence of qualification
CAR-66 · page 40
PassCARs summary (not official text): Certifying and support staff must produce their licence within 24 hours if an authorised DGCA person asks for it.
Official text (excerpt)
66. A.55 Evidence of qualification Personnel exercising certification privileges as well as support staff must produce their licence as evidence of qualification, if required by an authorized person of DGCA, within 24 hours.
Excerpt from CAR-66 — Licensing of Aircraft Maintenance Engineers (CAR Section 2, Series L), Issue III, Revision 2 · 2025-09-29, page 40. Read it in context in the official document ↗.
Appendix II §1 Basic examination standard — general
CAR-66 · page 107
PassCARs summary (not official text): Module exams are multiple choice (one correct answer), timed at a nominal 75 seconds per question, with a 75% pass mark, no penalty marking, a 30-day wait after a failed module and at most three attempts per examination in 12 months.
Official text (excerpt)
Appendix II – Basic Examination Standard (except for Category L Licence)
1. General
1.1 All basic examinations shall be carried out using the multiple choice question as specified below. The incorrect alternatives shall seem equally plausible to any one ignorant of the subject. All of the alternatives shall be clearly related to the question and of similar vocabulary, grammatical construction and length. In numerical questions, the incorrect answers shall correspond to procedural errors such as corrections applied in the wrong sense or incorrect unit conversions: they shall not be mere random numbers.
1.2 Each multiple choice questions must have more than two alternative answers of which only one must be the correct answer and the candidate shall be allowed a time per module which is based upon a nominal average of 75 seconds per question.
1.3 The pass mark for each CAR-66 module and sub-module multiple choice part of the examination is 75%.
1.4 Penalty marking systems shall not be used to determine whether a candidate has passed.
1.5 A failed module may not be retaken for at least 30 days following the date of the failed module examination.
1.6 The maximum number of attempts for each examination is three in a 12-month period.
The applicant shall provide in a written statement to the competent authority (DGCA), the number, and dates of attempts during the 12 months preceding the examination.
1.7 While it is accepted that the subject matter of the questions may be the same, the questions used as part of the MBT learning programme shall not be used in examinations
Excerpt from CAR-66 — Licensing of Aircraft Maintenance Engineers (CAR Section 2, Series L), Issue III, Revision 2 · 2025-09-29, page 107. Read it in context in the official document ↗.