Auxiliary Power Unit Flashcards
1
Q
Max permissible load on the APU Generator
A
40 KVA
2
Q
Max altitude for starting
A
37,000 FT
3
Q
Max altitude for APU operation
A
41,000 FT
4
Q
Max altitude for APU bleed air extraction
A
25,000 FT
5
Q
Max speed with APU door open
A
220 KIAS if APU not operating
No speed limitation if APU is operating
Mmo/Vmo
6
Q
What battery voltage is required before starting the APU
A
22 volts on both batteries
7
Q
What does the main battery power during an APU start
A
APU ECU
8
Q
What does the APU battery power during an APU start
A
Cranking of the 28 VDC start motor
9
Q
When will the AVAIL switch light illuminate
A
99% RPM plus 2 seconds
