APU Flashcards
What is the Make and Model of the APU;
Allied Signal GTCP36-150(W)
What is the primary purpose of the screen in the air inlet:
To prevent birds from nesting
Where does APU generator cooling come from:
NACA vent on left shoulder of fuselage next to the vertical stabilizer
What is an important item to take note of if the APU shuts itself down automatically:
Make note of the BITE code for maintenance (FAIL light ON)
How do you TEST the APU Fire detection and protection:
How do you TEST the APU BLEED LEAK system:
APU Fire test on the APU sub panel located on the aft center console
With AC inverters ON and buses powered do a FIRE/OVRHT test and observe the APU BLEED AIR LEAK annunciator
What is the maximum EGT on the APU:
What is the amp limit:
What does the CAUTION light on the APU panel indicate:
What does the MAX light indicate:
680 degrees C
300
Amperage has exceeded 150 amps
300 amps
What does a flashing APU ON light indicate:
APU fuel valve is in transit or not open
Where can the maximum APU amperage Vs altitude chart be found:
On a standard day at what altitude does the APU amperage begin to be limited:
AFM 6.2.1
6000 ft PA
How is the APU normally shut down:
Is there a way to shut down the APU on the exterior of the airplane:
O/S TEST button
YES, via a KILL switch in the Pressure Refueling Panel
What is the minimum time between start attempts:
5 min
What must you do if the APU was started in OVRD:
APU must be shutdown and restarted with the OVRD OFF prior to using it in flight
Can the APU be operating during de-icing operations:
NO
