Powerplants Flashcards
What is the primary purpose of the Oil to Fuel Heat
Exchanger?
Warm the fuel to prevent ice formation
Normal idle speed is adjusted to meet which engine
requirements?
Prevention of flame out, minimum IDG operating speed or
minimum pneumatic requirements
How does the FADEC continue to operate even during
complete loss of aircraft electrical power?
The FADEC has its own Permanent Magnetic Alternator (PMA)
While operating the engine thrust reversers, when will the
green REV light illuminate?
When the reverser is properly deployed
During normal operation, when does the associated amber
REV UNLK light illuminate?
When the associated reverser is unlatched, but not fully
deployed
What system prevents reverse thrust operation inflight?
Aircraft flight/ground sensing
What function does the FADEC provide during thrust reverser
operation?
Provides N1 overspeed protection during reverser operation
When does the FADEC adjust the engine idle system to flight
approach idle?
Inflight with the slats extended
Which engine system protection is NOT provided for by the
FADEC?
EGT
What FADEC mode has both N1 and N2 overspeed protection?
Both EPR and N1 modes
What happens to the oil quantity indicators during engine
start?
Show a 6-8 quart decrease
When is Alpha floor protection (thrust lock) available?
ATS arming lever ON and aircraft altitude > 100 feet RA
How does the FADEC computer determine minimum idle?
Prevent Flame-out, IDG, or Pneumatic requirements
What is the primary means of setting engine thrust?
EPR
Why are the Pack Valves closed before starting engines?
To obtain max air pressure available for start
