APU Flashcards

1
Q

What manufacturer?

A

Honeywell 36-150

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2
Q

Does apu has auto shutdown if you dont turn it off before takeoff?

A

Yes. Weight off wheels

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3
Q

What is the happening when the Master ON light flashes 9 times?

A

Selt test, Fuel valve opening and boost pump running

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4
Q

Does the APU auto shutdown for a fire?

A

Yes. But it does not blow the bottle.

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5
Q

Average APU burn?

A

250 lb/hr

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6
Q

Does the APU have a starter generator?

A

Yes

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7
Q

Does the APU have a dual ignition system?

A

Yes

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8
Q

How many minutes after start is the APU bleed available?

A

2 minutes

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9
Q

Can you do an APU oil test while the APU is running?

A

No

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10
Q

What module controls the APU starting and stopping and all other monitoring functions?

A

ECU … APU Electronic Control Unit

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11
Q

What all is automatically closed when a fire is detected in the apu?

A

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.
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