APU Flashcards
What manufacturer?
Honeywell 36-150
Does apu has auto shutdown if you dont turn it off before takeoff?
Yes. Weight off wheels
What is the happening when the Master ON light flashes 9 times?
Selt test, Fuel valve opening and boost pump running
Does the APU auto shutdown for a fire?
Yes. But it does not blow the bottle.
Average APU burn?
250 lb/hr
Does the APU have a starter generator?
Yes
Does the APU have a dual ignition system?
Yes
How many minutes after start is the APU bleed available?
2 minutes
Can you do an APU oil test while the APU is running?
No
What module controls the APU starting and stopping and all other monitoring functions?
ECU … APU Electronic Control Unit
What all is automatically closed when a fire is detected in the apu?
For the APU: when the fire is detected:
- The Fuel Shut Off Valve is automatically closed,
- The generator is automatically disconnected,
- An emergency shut down is commanded by the ECU.