Auxiliary Power Unit Flashcards
1
Q
Up to what altitude can you start the APU
A
30000 feet
2
Q
Up to what altitude can you use the APU for electric
A
33000 feet
3
Q
Up to what altitude can you use the APU bleed for engine start
A
21000
4
Q
Up to what altitude can you use the APU for AC and pressurization
A
15000
5
Q
When does the APU automaticaly shuts down in ground
A
Ground Apu overspeed Apu underspeed FADEC fault APU fire APU EGT overtemp APU high oil temp APU low oil temp Sensor fail
6
Q
When does the APU auto shuts down in flight
A
Overspeed
Underspeed
FADEC fault
7
Q
Lowest BATT 2 temp for APU start
A
-20C*
