General Aircraft Maintenance Knowledge Flashcards
7 cards from real AMT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 General Aircraft Maintenance Knowledge flashcards as text
Which standard governs the identification and certification of aircraft materials and parts to ensure traceability in FAA-regulated maintenance?
Answer: 14 CFR Part 21
14 CFR Part 21 governs the certification of products and articles, including requirements for approved parts and the systems that trace their origin and airworthiness approval.
A technician is performing a 100-hour inspection and finds an Airworthiness Directive (AD) has not been complied with. What is the CORRECT action?
Answer: Comply with the AD or obtain an FAA-approved exemption before returning the aircraft to service
An uncomplied-with AD is an airworthiness violation; the aircraft cannot legally be returned to service until the AD is accomplished or a valid FAA exemption is obtained.
What type of weld joint is used when two pieces of metal overlap and are welded along the edge of one piece?
Answer: Lap joint
A lap joint is formed when two pieces overlap and a fillet weld is made along the edge of the top piece where it meets the surface of the bottom piece.
During a pre-inspection of a pneumatic system, a technician notices the air bottles show pressure well below the minimum charge. The FIRST maintenance step is to:
Answer: Inspect the system for leaks before recharging
Low bottle pressure indicates a possible leak; the system must be inspected to find and correct the leak source before recharging, otherwise the charge will simply escape again.
On a continuity test using a multimeter, a technician reads zero ohms between two points in an electrical circuit. What does this indicate?
Answer: A complete and uninterrupted path (good continuity) between the two points
Zero ohms (or near-zero) on a continuity test means the electrical path between the two probes is intact with no significant resistance — indicating a good connection.
Which FAA publication contains the standard practices and procedures approved for use by mechanics when approved data is not specified by a manufacturer?
Answer: AC 43.13-1B, Acceptable Methods, Techniques, and Practices — Aircraft Inspection and Repair
AC 43.13-1B is the FAA's primary reference for acceptable repair and inspection methods when the manufacturer's maintenance manual does not specify a procedure.
An aircraft's logbook shows the last annual inspection was signed off 14 months ago. Under 14 CFR Part 91, this aircraft's airworthiness status for VFR day flight is:
Answer: Not airworthy for operation under Part 91 without a new annual inspection or special flight permit
14 CFR 91.409(a) requires an annual inspection every 12 calendar months; after 14 months the inspection is overdue and the aircraft is not airworthy for any flight without a new inspection or an FAA special flight permit.