Oral Bank - APU Flashcards

1
Q

When does the EICAS memo message APU RUNNING display?

A
  • APU selector ON, AND
  • APU N1 RPM exceeds 91%
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2
Q

Is electrical power available from the APU in-flight?

A

No

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3
Q

Can the APU be operated in flight?

A

Yes, when left running for T/O up to 20,000ft

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4
Q

How long should you wait before turning the battery switch off after the APU selector is rotated to OFF and why?

A
  • 2 minutes
  • Allows for a complete shutdown sequence, with fire detection capability
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