EASA Module 16
EASA Module 16 - Aircraft Maintenance Licence (Part-66)
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ExploreAbout this exam
Module 16 is the EASA Part-66 knowledge module covering the regulatory framework that surrounds aircraft maintenance: Commission Regulation (EU) No 1321/2014 on continuing airworthiness, together with the annexes commonly known as Part-66 (aircraft maintenance licence), Part-M (continuing airworthiness management), Part-145 (maintenance organisations) and Part-147 (training organisations). It is aimed at candidates working toward a Part-66 aircraft maintenance licence, and at mechanics, certifying staff and quality or compliance personnel who need to understand how licensing, organisation approval and continuing airworthiness obligations fit together. The exam is delivered as multiple choice questions and tests recall and application of regulatory structure rather than hands-on maintenance skill. Expect questions on which regulation or annex governs a given activity, the roles and responsibilities of the licence holder, the approved maintenance organisation and the continuing airworthiness management organisation, and how training and examination requirements are set. Preparation should centre on reading the consolidated text of Regulation (EU) No 1321/2014 and its annexes directly, because it has been amended many times - the EASA page lists amendments up to Commission Implementing Regulation (EU) 2026/100 - and on working through scenario questions that force you to identify the correct annex and responsible party. This page is independent study material and is not affiliated with or endorsed by EASA.
What you'll study
About EASA Module 16 preparation
What is Module 16 actually about?
It is the Part-66 knowledge module on the continuing airworthiness regulatory framework. The core reference is Commission Regulation (EU) No 1321/2014, whose annexes include Part-66, Part-M, Part-145 and Part-147. Questions test how licensing, organisation approval and continuing airworthiness responsibilities interlock.
Which regulation should I read first?
Start with Commission Regulation (EU) No 1321/2014 itself, adopted 26 November 2014 and published in OJ L 362, 17.12.2014, p. 1. It repealed Commission Regulation (EC) No 2042/2003. Read the articles before the annexes so you understand scope and responsibilities.
Is the regulation stable, or does it change often?
It changes often. The EASA page lists numerous amending acts, from Commission Regulation (EU) 2015/1088 through Commission Implementing Regulation (EU) 2026/100, plus related regulations 2024/1107 and 2024/1109. Always study the current consolidated version rather than an old printed copy.
How hard is Module 16 compared with technical modules?
Most candidates find it less technically demanding but more demanding on precise reading. There are no calculations; the difficulty is distinguishing similar-sounding roles and annexes. Candidates who memorise without reading the actual text tend to lose marks on questions that describe a scenario.
What are the most common failure modes?
Confusing Part-M with Part-145 responsibilities, mixing up the licence holder's privileges with the organisation's approvals, and relying on outdated amendment figures. Another frequent error is answering from memory of an older regulation instead of the current consolidated text.
What study order do you recommend?
Read the articles of Regulation (EU) No 1321/2014, then Part-66 for licensing, Part-147 for training organisations, Part-145 for maintenance organisations and Part-M for continuing airworthiness management. Finish with mixed scenario questions so you practise selecting the correct annex under time pressure.
Where can I find the official documents?
EASA publishes the regulation and its amendments in its Document Library, and the Official Journal carries the authoritative text. Use the EASA page for Regulation (EU) No 1321/2014 to track amendments, and check the Official Journal for the version in force when you sit the exam.
Does this page give me exam dates, fees or pass marks?
No. Those details are set by the competent authority or examination provider in your country and are not stated in the sources used here, so they are not published on this page. Confirm format, timing, fees and retake rules directly with your national authority or approved training organisation.