APU Flashcards
1
Q
What temp will the battery create an overheat alert
A
65 deg C
2
Q
How long after a fire or overheat condition exists will the bottle auto discharge into the APU
A
7 sec
3
Q
Auto shutdown conditions of the APU
A
Overspeed or Underspeed Start Failure Acceleration Failure EGT gauge or Overtemp reading Low / High Oil Pressure Failed Sensors, valves, relays, circuits Internal Failure
4
Q
Prior to shutting down APU what do you need to turn off
A
APU generator
APU bleed
5
Q
Can APU supply DC power in parallel with Engine driven generators? How about ground power?
A
Yes engine driven generators
No to ground power - makes APU go offline
6
Q
Can APU and Engines both supply Bleed air
A
No once engine bleeds are supplying, APU bleed is no longer supplied
7
Q
APU Starter Gen Overheats what will be displayed
A
GEN OHT displayed on APU control Panel WARN on GEN Switchlight on APU control Panel APU caution light on Caution panel APU auto shuts down Master caution light flashes.
