The EASA Part-66 Handbook
A complete guide to becoming a licensed aircraft maintenance engineer: the licence, the modules, the exams, the experience, and what comes after — with worked practice questions throughout.
How to Become a Licensed Aircraft Engineer
The complete EASA Part-66 handbook — licence categories, all 17 modules, exam format and pass marks, experience and OJT, the rules in 11 countries, type ratings and continuation training. Includes 255 practice questions with explanations. 2026 Edition, PDF.
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What is inside
Four parts, front matter to back matter.
Part I — The Licence
14 chaptersWhat Part-66 is, the A / B1 / B2 / B2L / B3 and C categories, the 17 modules, the syllabus, exam format and pass marks, essay questions, experience requirements, on-the-job training, licence extension, and how to keep your logbook.
Part II — Around the World
11 chaptersHow the same licence works under the UK CAA, CASA in Australia, the UAE GCAA, Qatar, Singapore, Hong Kong, India, Kenya, Egypt, Nigeria, and how the FAA A&P system differs.
Part III — Module by Module
17 chaptersOne chapter per EASA module: what it covers, the opening study-notes chapter, and 15 real practice questions with a full explanation of every correct answer.
Part IV — After the Licence
2 sectionsAircraft type ratings and the ATA chapter system with sample questions, plus the continuation training you must keep current: Human Factors and SMS, Fuel Tank Safety, EWIS, and Information Security (Part-IS).
Frequently asked questions
Is the handbook really free?
Yes. Enter your email and we send you the download link. There is no payment and no card required.
Why do you ask for an email address?
The download link is sent by email so we know the address is real. It also lets us send you the next edition when the regulations change.
How many practice questions are included?
255 — 15 for each of the 17 EASA modules, each with an explanation of why the correct answer is correct. The full bank on the site holds far more.
Does it cover aircraft type ratings?
Yes. Part IV explains what a type rating is and how the ATA chapter system works, with sample questions from the A320, 737NG and 787 banks.
Does it cover continuation training?
Yes. Part IV covers the recurrent training a licensed engineer must keep current: Human Factors including SMS, Fuel Tank Safety, EWIS and Information Security (Part-IS).
Can I share it with colleagues?
Please do. The file is not locked or watermarked. If someone shares it with you, you can get your own copy and the latest edition at part66online.com/handbook.