Aircraft Maintenance Engine & System Repairs Flashcards
7 cards from real AM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Aircraft Maintenance Engine & System Repairs flashcards as text
An engine fuel system shows erratic fuel flow indications. After verifying the fuel flow transmitter is serviceable, the technician should next inspect:
Answer: Fuel flow divider valve for sticking or contamination
A sticking or contaminated flow divider valve causes uneven fuel distribution and erratic fuel flow readings across the engine.
After replacing a turboprop engine propeller governor, what adjustment must be performed before returning to service?
Answer: Propeller governor speed setting adjustment
The propeller governor speed setting must be adjusted to the manufacturer's RPM specification after replacement to ensure correct constant-speed operation.
A turbofan engine vibration survey shows high vibration at fan speed (N1). The most likely cause is:
Answer: Fan blade damage or foreign object strike
High vibration correlated to N1 speed indicates fan rotor imbalance, most commonly caused by FOD damage, erosion, or missing balance weights.
When performing a rigging check on a turboprop engine power lever, travel limits are found out of specification. This is corrected by adjusting:
Answer: The control rod lengths at the turnbuckle or rod end fittings
Power lever travel limits are set by adjusting the lengths of the control rods at turnbuckles or rod-end fittings per the maintenance manual rigging procedure.
An exhaust gas temperature (EGT) exceedance occurs during takeoff. After returning to maintenance, the first required action is:
Answer: Record the peak EGT and duration, then consult the engine manufacturer's exceedance guide
The manufacturer's exceedance guide specifies required actions based on peak temperature and duration; the technician must first document the event before taking any further action.
Which statement about engine ground runs in a maintenance hangar is correct?
Answer: Engine ground runs should never be performed inside an enclosed hangar due to carbon monoxide and fire hazard
Engine ground runs inside enclosed hangars are prohibited because of extreme fire hazard, carbon monoxide buildup, and structural damage from jet blast or propwash.
During reciprocating engine overhaul, a crankshaft is found to have a journal diameter 0.003 inches below the minimum limit. The correct action is:
Answer: Condemn and replace the crankshaft
A crankshaft journal worn below the minimum published limit must be condemned and replaced; aircraft engine standards do not permit re-plating or re-grinding below limits.