Spin up the theory behind the panel.
The only Part-66 prep where you learn the theory by manipulating it — 50+ interactive simulations, notes, mind maps and timed mock exams across all 17 modules. Built by an instructor; aligned with EU 2023/989 & UK CAA.
- 17/17
- Modules live now
- A·B1·B2·B3
- Licence paths
- 50+
- Live simulations
“Aviation is proof that given the will, we have the capacity to achieve the impossible.”
Every module, one syllabus map
Mathematics
Arithmetic, algebra and geometry underpinning all maintenance theory.
Physics
Matter, mechanics, fluids, thermodynamics, optics and wave motion.
Electrical Fundamentals
DC theory, circuits, capacitance, magnetism and AC fundamentals.
Electronic Fundamentals
Semiconductors, printed circuit boards and servomechanisms.
Digital Techniques / Electronic Instrument Systems
Number systems, logic, data buses and electronic instruments.
Materials & Hardware
Ferrous/non-ferrous materials, composites, fasteners and pipes.
Read the theory
Concise lessons mapped to each Part-66 sub-section, written for the exam.
Run the simulation
Manipulate the physics yourself — generators, circuits, logic gates — until it clicks.
Prove it
Quizzes and mind maps lock in recall, with progress tracked toward each module.
Study smarter for the exam
- ›All 17 modules in one place
- ›Self-paced with progress tracking
- ›Practice quizzes with explanations
Run your class on Certify66
- ›Publish quizzes, mind maps & videos to any module
- ›Assign content to a specific topic in seconds
- ›Cohort seats for Part-147 schools
Not just another question bank
Interactive simulations
Manipulate the physics yourself — no other Part-66 platform has them.
Official-length mock exams
Timed papers per licence category at the exact Appendix II question counts.
Notes + mind maps
Concise summary notes and expandable concept maps on every sub-section.
Progress that counts
Track content covered and every quiz grade — pass or fail — not just passes.
Common questions
Is Certify66 an approved EASA / GCAA training course?
No — Certify66 is an independent study aid to help you revise for the Part-66 exams. It is not an EASA or GCAA approved training organisation, and it does not issue licences or certificates.
Which licence categories does it cover?
All of them — Category A, B1 (B1.1–B1.4), B2 and B3 — across all 17 EASA Part-66 modules, with content and mock exams tailored to each category's syllabus depth.
Is the content up to date with the latest regulations?
Yes. The syllabus structure and mock-exam lengths follow Commission Implementing Regulation (EU) 2023/989, and the material is equally applicable to UK CAA Part-66 candidates.
What makes it different from other Part-66 question sites?
Certify66 is the only Part-66 platform with 50+ interactive simulations you can manipulate to understand the theory — plus mind maps, summary notes and timed mock exams at the official Appendix II lengths, not just a list of questions.
Can I try it for free?
Yes. You can create a free account and study free modules, sample quizzes and simulations. Upgrade to unlock every module, the full question banks, all simulations and mock exams.
How many practice questions and mock exams are there?
Thousands of practice questions across all 17 modules, each with an explanation, plus stratified mock exam papers for every licence category at the official question counts and time limits.
Start studying free today
No card required. Unlock every module, simulation and mock exam when you're ready.
Create your free account