APU

Question 1

What temp will the battery create an overheat alert

Answer 1

65 deg C

Question 2

How long after a fire or overheat condition exists will the bottle auto discharge into the APU

Answer 2

7 sec

Question 3

Auto shutdown conditions of the APU

Answer 3

Overspeed or Underspeed
Start Failure
Acceleration Failure
EGT gauge or Overtemp reading
Low / High Oil Pressure
Failed Sensors, valves, relays, circuits
Internal Failure

Question 4

Prior to shutting down APU what do you need to turn off

Answer 4

APU generator

APU bleed

Question 5

Can APU supply DC power in parallel with Engine driven generators? How about ground power?

Answer 5

Yes engine driven generators

No to ground power - makes APU go offline

Question 6

Can APU and Engines both supply Bleed air

Answer 6

No once engine bleeds are supplying, APU bleed is no longer supplied

Question 7

APU Starter Gen Overheats what will be displayed

Answer 7

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.