--- title: "66.A.1 – 66.A.70: SECTION A — TECHNICAL REQUIREMENTS (Part-66) — rule index · Avioverse" description: "66.A.1 – 66.A.70, Regulation (EU) No 1321/2014. This section defines the aircraft maintenance licence and establishes the requirements for application…" url: "https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements" --- # SECTION A — TECHNICAL REQUIREMENTS Annex III (Part-66) · Continuing Airworthiness · Regulation (EU) No 1321/2014 · 66.A.1 – 66.A.70 On this page 1. ## [66.A.1 Scope](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-1) This section defines the aircraft maintenance licence and establishes the requirements for application, issue and continuation of its validity. 2. ## [66.A.3 Licence categories and subcategories](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-3) Aircraft maintenance licences include the following categories and, where applicable, subcategories and system ratings: [GM 66.A.3 Licence categories](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-3#gm-66-a-3) 3. ## [66.A.5 Aircraft groups](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-5) For the purpose of ratings on aircraft maintenance licences, aircraft shall be classified into the following groups: [GM1 66.A.5 Aircraft groups](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-5#gm1-66-a-5) 4. ## [66.A.10 Application](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-10) An application for an aircraft maintenance licence or change to such licence shall be made on an EASA Form 19 (see Appendix V) in a manner established by… [AMC 66.A.10 Application](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-10#amc-66-a-10) [GM 66.A.10(a) Application](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-10#gm-66-a-10-a) 5. ## [66.A.15 Eligibility](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-15) An applicant for an aircraft maintenance licence shall be at least 18 years of age. 6. ## [66.A.20 Privileges](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-20) The following privileges shall apply: A category A aircraft maintenance licence permits the holder to issue certificates of release to service following… [GM1 66.A.20(a) Privileges](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-20#gm1-66-a-20-a) [AMC 66.A.20(a)(4) Privileges](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-20#amc-66-a-20-a-4) [AMC 66.A.20(b)(2) Privileges](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-20#amc-66-a-20-b-2) [GM 66.A.20(b) 2 Privileges](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-20#gm-66-a-20-b) [AMC 66.A.20(b) 3 Privileges](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-20#amc-66-a-20-b) [GM 66.A.20(b) 4 Privileges](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-20#gm-66-a-20-b-2) 7. ## [66.A.25 Basic knowledge requirements](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-25) The applicant for an aircraft maintenance licence shall demonstrate by examination a level of knowledge of the related subject modules in accordance with… [AMC 66.A.25 Basic knowledge requirements](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-25#amc-66-a-25) [GM 66.A.25(a) Basic knowledge requirements](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-25#gm-66-a-25-a) [GM 66.A.25(b) Basic knowledge requirements](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-25#gm-66-a-25-b) 8. ## [66.A.30 Basic experience requirements](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-30) An applicant for an aircraft maintenance licence shall have acquired: [AMC1 66.A.30(a) Basic experience requirements](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-30#amc1-66-a-30-a) [GM1 66.A.30(a) Basic experience requirements](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-30#gm1-66-a-30-a) [AMC 66.A.30(c) Basic experience requirements](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-30#amc-66-a-30-c) [AMC 66.A.30(d) Basic experience requirements](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-30#amc-66-a-30-d) [AMC1 66.A.30(e) Basic experience requirements](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-30#amc1-66-a-30-e) 9. ## [66.A.40 Continued validity of the aircraft maintenance licence](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-40) The aircraft maintenance licence becomes invalid 5 years after its last issue or change, unless the holder submits his/her aircraft maintenance licence… [GM 66.A.40 Continued validity of the aircraft maintenance licence](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-40#gm-66-a-40) 10. ## [66.A.45 Endorsement with aircraft ratings](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-45) In order to be entitled to exercise certification privileges on a specific aircraft type, the holder of an aircraft maintenance licence needs to have… [GM1 66.A.45 Endorsement with aircraft ratings](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-45#gm1-66-a-45) [GM 66.A.45(b) Endorsement with aircraft ratings](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-45#gm-66-a-45-b) [AMC 66.A.45(d) ;(e)3;(f)1;(g)1;(h) Endorsement with aircraft ratings](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-45#amc-66-a-45-d) [AMC1 66.A.45(da) Endorsement with aircraft ratings](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-45#amc1-66-a-45-da) [AMC 66.A.45(e) Endorsement with aircraft ratings](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-45#amc-66-a-45-e) [GM1 66.A.45(h)(ii) Endorsement with aircraft ratings](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-45#gm1-66-a-45-h-ii) 11. ## [66.A.50 Limitations](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-50) Limitations introduced on an aircraft maintenance licence are exclusions from the certification privileges and, in the case of limitations referred to in… [AMC 66.A.50(b) Limitations](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-50#amc-66-a-50-b) 12. ## [66.A.55 Evidence of qualification](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-55) Personnel exercising certification privileges as well as support staff shall produce their licence, as evidence of qualification, within 24 hours upon… 13. ## [66.A.70 Conversion provisions](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-70) The holder of a certifying staff qualification valid in a Member State, prior to the date of entry into force of Annex III (Part-66) shall be issued an… [GM 66.A.70 Conversion provisions](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-70#gm-66-a-70) [GM 66.A.70(c) Conversion provisions](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-70#gm-66-a-70-c) [GM 66.A.70(d) Conversion provisions](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/section-a-technical-requirements/66-a-70#gm-66-a-70-d) Consolidated from the EASA Easy Access Rules (revision 2 Sep 2025, extracted 13 Oct 2026) for convenience. 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