AM Study Guide 2026
Everything you need to pass the AM exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 AM Exam Format at a Glance
📚 AM Topics to Study (69)
✍️ Sample AM Questions & Answers
1. A reciprocating engine produces a consistent metallic knock that increases with engine load but decreases at higher RPM. This symptom most closely resembles:
Big-end bearing knock typically increases with load (higher cylinder pressure forces) and can decrease at high RPM as oil centrifugal force improves bearing film.
2. According to 14 CFR 43.13, maintenance must be performed using methods, techniques, and practices prescribed in:
14 CFR 43.13 requires mechanics to use the manufacturer's current maintenance manual or other FAA-approved data as the basis for all maintenance.
3. An aircraft has an installed component with a life limit expressed in flight cycles. Who is ultimately responsible for tracking compliance with that limit?
14 CFR 91.409 and 91.417 place responsibility for airworthiness and record-keeping on the aircraft owner or operator.
4. Which of the following is a key principle of workplace safety in Aircraft Maintenance Certification?
Reporting near-misses helps organizations identify potential hazards before they cause serious injuries, creating a culture of safety.
5. When performing a borescope inspection of a turbine engine combustion liner, a technician finds a crack that exceeds the manufacturer's serviceable limit. This finding MUST be:
When a finding exceeds the manufacturer's serviceable limit, the component must be removed from service and repaired or replaced per the maintenance manual.
6. What is the correct procedure for installing a cotter pin through a castle nut and bolt?
One leg is bent over the bolt end and the other is bent back along the flat of the castle nut to secure the pin and prevent interference with adjacent structure.