Make it click. Pass it first time.
Spin up the theory behind the panel. The only Part-66 prep where you learn it by experiencing it, 100 interactive simulations, 3,720 explained questions, notes, mind maps and timed mock exams across all 17 modules. Built by an instructor, for EASA, GCAA CAR-66 and UK CAA candidates.
- 17/17
- Modules live now
- 100
- Live simulations
- 3,720
- Explained questions
“Aviation is proof that given the will, we have the capacity to achieve the impossible.”
17 modules, one aircraft
EASA / CAR Part-66 is one aircraft, looked at 17 ways.
Browse all 17 modules →M6 · M7 · M11 Materials, hardware and the maintenance practices that join them.
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
Experience 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 EASA / GCAA Part-147 schools
Not just another question bank
Interactive simulations
Experience 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.
Know exactly where you stand, not just pass or fail
Certify66 tracks two things on every module: how much of the material you've worked through, and your real quiz grades, every attempt, pass or fail. No guessing what to revise next.
- Content coverage, topics you've actually studied
- Quiz grade, your best score on every quiz
- Mock exams tracked against the official pass mark
Electrical Fundamentals
Basic Aerodynamics
Digital Techniques
Common questions
Is Certify66 an approved EASA / CAR 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?
Category A, B1, including all its subcategories B1.1-B1.4, such as B1.3 turbine helicopters, and B2, 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 100 interactive simulations you can experience to understand the theory, plus 3,720 explained questions, mind maps, summary notes and timed mock exams at the official Appendix II lengths, not just a list of questions. It covers EASA, GCAA CAR-66 and UK CAA candidates.
Do I need an account?
Yes. Every module, question bank, simulation and mock exam is open to work through, and an account adds progress tracking.
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 today
No card required. Unlock every module, simulation and mock exam when you're ready.
Create an account