APU Flashcards
1
Q
When does the ‘APU RUNNING’ EICAS memo message display?
A
When the APU selector is ON and the APU N1 RPM is above 95% N1.
2
Q
Is electrical power available from the APU In-flight?
A
No
3
Q
Can the APU be operated In-flight?
A
Yes, only if started on the ground, it can be on up to 20,000’.
4
Q
How long should you wait before turning the battery switch to OFF after turning the APU off, and why?
A
At least 2 minutes, to ensure a full shutdown of the APU, with fire detection capability.
