Part 66 AME Licence Syllabuses

Introduction of New Part 66 AME Licence Syllabuses

The Part 66 AME basic licensing examination syllabuses have been revised, effective 01 Dec 08. The new syllabuses have been updated to reflect current technology and work practices. They are in an objectivised format, plainly stating the subject area and depth of knowledge required, and using standard verbs to describe the type of performance or activity to be demonstrated. The new syllabuses should assist training organisations and candidates prepare for the examinations by clearly defining the knowledge requirements.

See below for further information on the changes and transition requirements.

Previous AC66-1 Aircraft Maintenance Engineer Licence is revised to become AC66-1 (PDF 337 KB) Revision 1 Aircraft Maintenance Engineer Licence - General.

Previous AC66-2.1 Aircraft Maintenance Engineer Licence - Basic Examination Curricula is rewritten and reformatted to become the following individual ACs, each containing one examination subject syllabus. The ACs last digit numbering is based on the examination code number (see table below).

AMEL Examination Requirements

Information from:

AC66-1 (PDF 337KB) Subpart B - Aircraft Maintenance Engineer Licence, 66.53(a)(2) Examinations (page 7)

The table below details the examinations requirements for each category. The table identifies each subject code number (column 2) and name (column 3) and indicates the Advisory Circular that contains the syllabus and other relevant material for each subject (column 1).

Use this link to view the ACs.

Table showing AMEL Basic Examination Requirements

Notes: Exams required prior to issue in the following categories
1 Aeroplane Prior to the issue of a pressurised aircraft type rating in Groups 5 or 6, a pass in Subject 5 is required.
2 Powerplant Prior to the issue of category, either subjects 4 or 6 and either subjects 7 or 8 required, dependent upon the aspirations of the candidate. Only need to take one each of the paired subjects.
All four subjects must be taken for all four rating specialities.
3 Electrical Prior to the issue of a type rating in Group 2, a pass in Subjects 12 & 13 is required.
4 Instrument Prior to the issue of a rating in Group 2 or 3, a pass in Subjects 12 &14 is required.
5 Radio Prior to the issue of a rating in Groups 2, 3 or 4, a pass in Subjects 12 &15 is required.


The new syllabuses completely replace the current syllabuses on 01 Dec 08.

  • Examination applicants sit examinations set to the current syllabuses published in AC66-2.1 Revision 2 until 30 Nov 08.
  • Examination applicants sit examinations set for the new syllabuses published in the new AC66-2.x series from 01 Dec 08.

Grand-parenting Provisions

Examinations passed before 01 Dec 08 are acceptable for AME licence issue in accordance with rule 66.53(a)(2). Refer to transition arrangements above.

AME Licence issue applicants who have passed —

  • Subject 01 (Aeronautical Science) prior to 01 Dec 08 will be considered to have passed both Subject 1A (Aeronautical Science – Mathematics & Physics) and Subject 1B (Aeronautical Science – Electrical Fundamentals).
  • Subject 11 (Avionics I) prior to 01 Dec 08 will be considered to have passed both Subject 1B (Aeronautical Science – Electrical Fundamentals) and Subject 11.

Applicants for an Electrical, Instrument, or Radio Type Rating, on pressurised aircraft over 5700kg, who have passed any one of the Subjects 13, 14 or 15 prior to 01 Dec 08 will be considered to have also passed Subject 12 (Avionics II).

Summary of Major Changes to Part 66 AMEL Syllabuses

Under the previous syllabuses, Subject 1, Aeronautical Science, covered the mathematics, physics and basic electricity requirements for the AMEL. This was a broad area and candidates often struggled with the examination. Subject 11, Avionics 1, was also a large syllabus covering both basic and applied electrical topics.

The new syllabuses combine the fundamental electrical topics from both Subject 1 and Subject 11 into one area. This has been done by splitting Aeronautical Science into two manageable subjects: Subject 1A, Mathematics and Physics, and Subject 1B, Electrical Fundamentals. 1B also contains new material on digital electronics. As a result, Subject 11, Avionics 1, has been reduced to a more manageable size, and modern electronic and digital systems have been included.

Subject 12, Avionics 2, is a new subject introduced for avionics engineers who want to gain specific type ratings on aircraft above 5700 kg. It includes material that used to be part of Subjects 13, Electrical Systems, 14, Instrument Systems, and 15, Radio Systems, as well as digital techniques and computer/electronic devices for transport category aircraft, and aerodynamics for high speed flight. Subjects 13, 14, and 15 have all been reduced as a result, but they have had additional material on current technology, and material to meet ICAO requirements, added.

Subject 17, Human Factors, has been completely redeveloped, making it consistent with the EASA Human Factor Syllabus and world best practice.

ACs Renumbered but Unchanged

The following existing ACs have been renumbered to accommodate the above revision and AC renumbering in line with examination subject numbering. The ACs below have not been revised:

AC66-2.2 renumbered as AC66-2.32 Examination curricula–Certificate of inspection authorisation (subject 025)
AC66-2.4 renumbered as AC66-2.33 Examination curricula–Airframe overhaul (subject 009)
AC66-2.5 renumbered as AC66-2.34 Examination curricula–Mechanical component ratings (group 7)
AC66-2.6 renumbered as AC66-2.35 Examination curricula–Avionic component ratings (group 7)
AC66-2.7 renumbered as AC66-2.30 Examination curricula–Mechanical group ratings
AC66-2.8 renumbered as AC66-2.31

Examination curricula–Avionic group ratings