B757 APU Flashcards
1
Q
APU Fire System
A
APU fire detection
APU fire warning
APU fire extinguishing
2
Q
APU Electrical max altitude?
A
42,000 ft
3
Q
APU pneumatics max altitude?
A
17,000 ft
4
Q
What happens to the APU when main battery is turned off on the ground?
A
Causes APU shutdown with cool down period, without fire detection.
5
Q
APU starter duty
A
3 attempts in 60 minutes
6
Q
When is the APU normal to be started?
A
Receipt of the ACARS Final W and B, or
Minutes prior to scheduled block out
7
Q
APU Fire is auto extinguished if . . . ?
A
- On the ground
2. Both fuel control switches in cutoff
