AM Aircraft Maintenance Inspection & Troubleshooting 2 — Questions and Answers
Question 1: During a progressive inspection, which document must an FAA-approved repair station use to track completion of each inspection segment?
- Maintenance Release Form 337
- Airworthiness Directive compliance log
- Approved inspection program with sign-offs for each segment (Correct answer)
- Aircraft flight manual supplement
Correct answer: Approved inspection program with sign-offs for each segment
An approved progressive inspection program must include provisions for documenting the completion and sign-off of each inspection segment.
Question 2: An aircraft exhibits intermittent static on the communication radio only during climb. The MOST likely cause is:
- Faulty squelch circuit
- Loose antenna coaxial connector affected by airframe flexing (Correct answer)
- Defective audio panel selector switch
- Low alternator output voltage at altitude
Correct answer: Loose antenna coaxial connector affected by airframe flexing
Intermittent static only during climb suggests a mechanical connection issue where airframe flexing loosens a coaxial antenna connector.
Question 3: When inspecting a turbine engine compressor for FOD damage, a nick that exceeds limits in the FIRST stage rotor blade requires:
- Blend repair within the same shift
- Removal and replacement or repair per the engine manufacturer's manual (Correct answer)
- Continued service if the nick is under 0.030 inches
- A logbook notation and 100-hour re-inspection
Correct answer: Removal and replacement or repair per the engine manufacturer's manual
Blade damage exceeding manufacturer limits requires removal, replacement, or repair strictly per the engine manufacturer's maintenance manual.
Question 4: A landing gear retraction test reveals that the right main gear takes 5 seconds longer to retract than the left. The FIRST component to inspect is:
- Hydraulic reservoir level
- Actuator cylinder for internal bypass (Correct answer)
- Gear door sequencing valve
- Uplock hook and spring assembly
Correct answer: Actuator cylinder for internal bypass
An actuator cylinder with internal bypass causes fluid to recirculate internally, slowing actuation time on the affected gear.
Question 5: According to 14 CFR Part 43, an aircraft owner/operator is permitted to perform which of the following inspections without a certificated mechanic?
- 100-hour inspection
- Annual inspection
- Preflight inspection (Correct answer)
- Progressive inspection
Correct answer: Preflight inspection
14 CFR Part 43 Appendix A allows the owner/operator to perform preflight inspections as preventive maintenance is not required to be done by a mechanic.
Question 6: A continuity check of a landing light circuit shows correct resistance, but the light still does not illuminate. The NEXT logical troubleshooting step is:
- Replace the landing light bulb
- Check for correct voltage at the light socket with the switch ON (Correct answer)
- Inspect the circuit breaker panel for corrosion
- Verify the avionics master switch position
Correct answer: Check for correct voltage at the light socket with the switch ON
Correct resistance but no illumination means the wiring is intact; checking for voltage at the socket confirms whether current is reaching the load.
Question 7: During inspection of an aircraft fuel system, you discover a blue stain around a fuel cap gasket. This finding indicates:
- Fuel contamination with hydraulic fluid
- Fuel dye residue from recent sumping — no action required
- A fuel cap seal leak requiring gasket replacement (Correct answer)
- Microbial growth in the fuel cell
Correct answer: A fuel cap seal leak requiring gasket replacement
Blue staining (from aviation gasoline dye) around the fuel cap area is evidence of a leaking cap gasket that must be replaced.
AM Aircraft Maintenance Inspection & Troubleshooting 2
During a progressive inspection, which document must an FAA-approved repair station use to track completion of each inspection segment?