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APPENDICES TO ANNEX III (Part-66)

Annex III (Part-66) · Continuing Airworthiness · Regulation (EU) No 1321/2014 · 3.1 – 4.2

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  1. Appendix I Basic Knowledge Requirements (except for category L licence)

    Appendix I — Basic Knowledge Requirements (except for category L licence)

  2. 1. Knowledge levels for category A, B1, B2, B2L, B3 and C aircraft maintenance licences

    Basic knowledge for categories A, B1, B2, B2L and B3 is indicated by knowledge levels (1, 2 or 3) of each applicable subject.

  3. 2. Modularisation

    Qualification on basic subjects for each aircraft maintenance licence category or subcategory shall be in accordance with the following matrix, where…

  4. MODULE 1. MATHEMATICS

    MODULE 1. MATHEMATICS LEVEL A B1 B2 B2L B3 1.1 Arithmetic 1 2 1.2 Algebra (a) Simple algebraic expressions;

  5. MODULE 2. PHYSICS

    MODULE 2. PHYSICS LEVEL A B3 B1 B2 B2L 2.1 Matter 1 2 2.2. Mechanics 2.2.1 Statics 1 2 2.2.2 Kinetics 1 2 2.2.3 Dynamics (a) Mass, force and energy;

  6. MODULE 3. ELECTRICAL FUNDAMENTALS

    MODULE 3. ELECTRICAL FUNDAMENTALS LEVEL A B1 B2 B2L B3 3.1 Electron theory 1 1 1 3.2 Static electricity and conduction 1 2 1 3.3 Electrical terminology 1…

  7. MODULE 4. ELECTRONIC FUNDAMENTALS

    MODULE 4. ELECTRONICS FUNDAMENTALS LEVEL A B1 B3 B2 B2L 4.1 Semiconductors 4.1.1 Diodes (a) Description and characteristics;

  8. MODULE 5. DIGITAL TECHNIQUES/ELECTRONIC INSTRUMENT SYSTEMS

    MODULE 5. DIGITAL TECHNIQUES/ELECTRONIC INSTRUMENT SYSTEMS LEVEL A B3 B1 B2 B2L 5.1 Electronic instrument systems 1 1 1 1 5.2 Numbering systems — — 1 2…

  9. MODULE 6. MATERIALS AND HARDWARE

    MODULE 6. MATERIALS AND HARDWARE LEVEL A B1 B3 B2 B2L 6.1 Aircraft materials — ferrous (a) Alloy steels used in aircraft;

  10. MODULE 7. MAINTENANCE PRACTICES

    MODULE 7. MAINTENANCE PRACTICES LEVEL A B1 B3 B2 B2L 7.1 Safety precautions – aircraft and workshop 3 3 3 7.2 Workshop practices 3 3 3 7.3 Tools 3 3 3…

  11. MODULE 8. BASIC AERODYNAMICS

    MODULE 8. BASIC AERODYNAMICS LEVEL A B3 B1 B2 B2L 8.1 Physics of the atmosphere 1 2 International Standard Atmosphere (ISA), application to aerodynamics.

  12. MODULE 9. HUMAN FACTORS

    MODULE 9. HUMAN FACTORS LEVEL ALL 9.1 General 2 9.2 Human performance and limitations 2 9.3 Social psychology 1 9.4 Factors that affect performance 2 9.5…

  13. MODULE 10. AVIATION LEGISLATION

    MODULE 10. AVIATION LEGISLATION LEVEL A B1 B2 B2L B3 10.1 Regulatory framework 1 1 10.2 Certifying Staff — maintenance 2 2 10.3 Approved maintenance…

  14. MODULE 11. AEROPLANE AERODYNAMICS, STRUCTURES AND SYSTEMS

    MODULE 11. TURBINE AEROPLANE AERODYNAMICS, STRUCTURES AND SYSTEMS (Appendix I to Part-66) MODULE 11.

  15. MODULE 12. HELICOPTER AERODYNAMICS, STRUCTURES AND SYSTEMS

    MODULE 12. HELICOPTER AERODYNAMICS, STRUCTURES AND SYSTEMS LEVEL A3 A4 B1.3 B1.4 12.1 Theory of flight — rotary wing aerodynamics 1 2 12.2 Flight control…

  16. MODULE 13. AIRCRAFT AERODYNAMICS, STRUCTURES AND SYSTEMS

    C/N: Communication & Navigation; Ins.: Instruments; A/F: Autoflight;

  17. MODULE 14. PROPULSION

    MODULE 14. PROPULSION LEVEL B2 B2L Instruments B2L Airframe &

  18. MODULE 15. GAS TURBINE ENGINE

    MODULE 15. GAS TURBINE ENGINE LEVEL A1 A3 B1.1 B1.3 15.1 Fundamentals 1 2 15.2 Engine performance — 2 15.3 Inlet 2 2 15.4 Compressors 1 2 15.5 Combustion…

  19. MODULE 16. PISTON ENGINE

    MODULE 16. PISTON ENGINE LEVEL A2 A4 B1.2 B1.4 B3 16.1 Fundamentals 1 2 16.2 Engine performance 1 2 16.3 Engine construction 1 2 16.4 Engine fuel systems…

  20. MODULE 17. PROPELLER

    (Appendix I to Part-66) MODULE 17A. PROPELLER LEVEL A1 A2 B1.1 B1.2 B3 17.1 Fundamentals 1 2 17.2 Propeller construction 1 2 17.3 Propeller pitch control…

  21. 3. Basic training methods

    An appropriate training method, or combination of methods, shall be determined for the entire course or for each of its modules or submodules, with…

  22. AMC1 Appendix I — Basic Knowledge Requirements (except for category L licence) Section 2

    MODULARISATION MODULE 1 — MATHEMATICS MODULE 1 — MATHEMATICS LEVEL A1 A2 A3 A4 B1 B2 B2L B3 1.1 Arithmetic 1 2 Arithmetical terms and signs, methods of…

  23. AMC1 Appendix I — Basic Knowledge Requirements (except for category L licence) Section 3

    Basic training methods Training methods are categorised as follows:

  24. Appendix II Basic examination standard (except for category L licence)

    Appendix II — Basic examination standard (except for category L licence)

  25. 1. General

    1.1. All basic examinations shall be carried out using the multi-choice question format and essay questions as specified below.

  26. 2. Number of questions per module

    2.1. MODULE 1 – MATHEMATICS Category A: 16 multiple-choice, no essay questions.

  27. AMC1 Appendix II — Basic examination standard (except for category L licence)

    The tables below show the acceptable number of questions for the submodules.

  28. Appendix III Aircraft type training and type evaluation standard – on-the-job training (OJT)

    Appendix III Aircraft type training and type evaluation standard – on-the-job training (OJT)

  29. 1. General

    Aircraft type training shall consist of theoretical training and examination, and, except for the category C ratings, practical training and assessment.

  30. 2. Aircraft type training levels

    The three levels listed below define the objectives, the depth of training and the level of knowledge that the training is intended to achieve.

  31. 3. Aircraft type training standard

    Although aircraft type training includes both theoretical and practical elements, courses can be approved for the theoretical element, the practical…

  32. 3.1 Theoretical element

    Objective: On completion of a theoretical training course the student shall be able to demonstrate, to the levels identified in the Appendix III…

  33. 3.2 Practical element

    Objective: The objective of practical training is to gain the required competence in performing safe maintenance, inspections and routine work according…

  34. 4. Type training examination and assessment standard

    Type training examination and assessment standard

  35. 4.1 Theoretical element examination standard

    After the theoretical portion of the aircraft type training has been completed, a written examination shall be performed, which shall comply with the…

  36. 4.2 Practical element assessment standard

    After the practical element of the aircraft type training has been completed, an assessment must be performed, which must comply with the following:

  37. 5. Type evaluation standard for Group 2 and Group 3 aircraft

    Type evaluation relative to aircraft of Group 2 or Group 3 shall be conducted by training organisations appropriately approved in accordance with Annex…

  38. 6. On-the-job training (OJT)

    6.1 General The OJT is the training that the applicant is given on a particular aircraft type in a real workplace, having the possibility to learn…

  39. AMC to Appendix III to Part-66 ‘Aircraft Type Training and Examination Standard. On-the-Job Training’

    Aircraft Type Training and On-the-Job Training The theoretical and practical training providers, as well as the OJT provider, may contract the services…

  40. AMC1 Appendix III Aircraft type training and type evaluation standard — on-the-job training (OJT) Section 1

    Aircraft Type Training 1. Aircraft type training may be sub-divided in airframe and/or powerplant and/or avionics/electrical systems type training courses.

  41. AMC to Paragraphs 1(b), 3.2 and 4.2 of Appendix III to Part-66 ‘Aircraft Type Training and Examination Standard. On-the-Job Training’

    Practical Element of the Aircraft Type Training 1. The practical training may include instruction in a classroom or in simulators but part of the…

  42. AMC to Paragraph 1(c) of Appendix III to Part-66 ‘Aircraft Type Training and Examination Standard. On-the-Job Training’

    Differences Training Approved difference training is not required for different variants within the same aircraft type rating (as specified in Appendix I…

  43. GM1 Appendix III Aircraft type training and type evaluation standard — on-the-job training (OJT) Section 1(c)

    DIFFERENCES TRAINING If the holder of a B1 and B2 licence, without any type rating, successfully completes a combined type training course (B1 + B2)…

  44. AMC1 Appendix III Aircraft type training and type evaluation standard — on-the-job training (OJT) Section 3

    AIRCRAFT TYPE TRAINING STANDARD Training methods are categorised as ‘instructor-centred’, ‘student-centred’ and ‘blended training’.

  45. AMC1 Appendix III Aircraft type training and type evaluation – on-the-job training (OJT) Section 3.1(d)

    Training needs analysis (TNA) for the theoretical element of the aircraft type training 1.

  46. AMC1 Appendix III Aircraft type training and type evaluation standard — on-the-job training (OJT) Section 4.1

    Type training examination and assessment standard 4.1 Theoretical element examination standard Examinations may be computer or paper based, or a…

  47. AMC to Section 5 of Appendix III to Part-66 ‘Aircraft Type Training and Examination Standard. On-the-Job Training’

    Type Examination Standard This Section 5 ‘Type Examination Standard’ does not apply to the examination performed as part of type training.

  48. AMC1 Appendix III Aircraft type training and type evaluation standard — on-the-job training (OJT) Section 6

    On-the-job training (OJT) General ‘Maintenance organisations appropriately approved according to this Regulation for the maintenance of that aircraft…

  49. Appendix IV Experience and basic knowledge modules or partial modules required for extending an aircraft maintenance licence under Annex III (Part-66)

    Experience requirements Table A below shows the experience requirements, in months, for adding a new category or subcategory to a licence granted in…

  50. Appendix V Application Form — EASA Form 19

    This Appendix contains an example of the form used for applying for the aircraft maintenance licence referred to in Annex III (Part-66).

  51. Appendix VI Aircraft Maintenance Licence referred to in Annex III (Part-66) — EASA Form 26

    An example of the aircraft maintenance licence referred to in Annex III (Part-66) can be found on the following pages.

  52. Appendix VII Basic knowledge requirements for category L aircraft maintenance licence

    The definitions of the different levels of knowledge required in this Appendix are the same as those set out in point 1 of Appendix I.

  53. AMC1 Appendix VII Basic knowledge requirements for category L aircraft maintenance licence

    MODULE 1L — BASIC KNOWLEDGE MODULE 1L — BASIC KNOWLEDGE Level 1L.1 Mathematics Arithmetic:

  54. Appendix VIII Basic examination standard for category L aircraft maintenance licence

    The standardisation basis for examinations related to the Appendix VII basic knowledge requirements shall be as follows:

  55. AMC1 Appendix VIII — Basic examination standard for category L aircraft maintenance licence

    NUMBER OF QUESTIONS PER SUBMODULE The tables below show the number of questions recommended for each submodule.

  56. Appendix IX Assessment method for the multimedia-based training (MBT)

    The purpose of this Appendix is to establish the requirements for the assessment and approval by a competent authority of any course that includes MBT in…

Consolidated from the EASA Easy Access Rules (revision 2 Sep 2025, extracted 17 Aug 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.

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