UK CAA Part-66
UK CAA Part-66 exam preparation
After Brexit the UK kept the Part-66 system almost unchanged: the UK CAA licenses aircraft maintenance engineers under UK Regulation (EU) No 1321/2014, retained in UK law. The modules, categories and exam format are the same ones EASA uses — so the same practice bank works for UK candidates.
1–17
Modules
A · B1 · B2 · B3
Categories
75%
Pass mark
Multiple choice + essays
Question format
The same modules and syllabus
UK CAA Part-66 uses the same numbered modules as EASA — Mathematics, Physics, Electrical and Electronic Fundamentals, Human Factors, and the rest — with the same knowledge levels per category. Practising the module question banks here maps directly onto what you sit for a UK Part-66 licence.
The same 75% pass mark
UK CAA basic knowledge exams keep the 75% pass mark and the multiple-choice format, with no penalty marking for wrong answers. Unlike EASA, which made Modules 9 and 10 multiple choice only in June 2024, the UK CAA still sets essay questions in Modules 7, 9 and 10. Our practice tests report your percentage against the 75% threshold so you know when you are ready for the multiple-choice part.
Changes under consultation (RMT.0201)
In January 2026 the UK CAA consulted on updating UK Part-66 and Part-147 under rulemaking task RMT.0201. The proposals cover newer training methods, such as distance learning and multimedia-based training, and maintenance on aircraft with new types of propulsion, plus transition rules for anyone already on a basic training course. The consultation closed on 13 April 2026. Check the CAA's response before relying on any detail, because the final rules may differ from the proposals.
Where UK and EASA now differ
Since 2021 UK and EASA licences are issued separately and are no longer automatically recognised in each other's systems — conversion routes exist if you hold one and need the other. The knowledge exam syllabus, however, is still the shared Part-66 material, which is exactly what this bank covers.
Frequently asked questions
Can I use EASA Part-66 questions for the UK CAA exams?
Yes. The UK retained the Part-66 module structure and syllabus, so the technical modules (1–9, 11–17) are the same material. Practising the EASA-based bank is valid preparation for the UK CAA module exams.
Is the pass mark the same?
Yes — the UK CAA keeps the 75% pass mark for the Part-66 module knowledge exams, the same as EASA.
What about Module 10 (Aviation Legislation)?
Legislation is the one module where UK and EASA content diverges most, because it covers the regulatory framework itself. Use Module 10 here for the general structure and concepts, but always cross-check the current UK CAA regulatory references before your exam.
Is UK Part-66 about to change?
Possibly. In January 2026 the UK CAA consulted on changes to UK Part-66 and Part-147 (RMT.0201), covering new training methods and new propulsion technologies. The consultation closed on 13 April 2026, and the final rules had not been published when this page was last checked.