APU limitations Flashcards
1
Q
Min temperature for cold-soaked APU starting on the ground is ?
A
-40°C
2
Q
The APU starter motor duty cycle is limited to not more than ____ start attempts in _____ hr, with a ____ minutes delay between cranking attempts.
A
. Three (3)
. One (1) hour
. Two (2) minute
3
Q
Max APU starting altitude ?
A
37,000 ft.
4
Q
Max operating altitude?
A
41,000 ft.
5
Q
Max altitude for APU bleed air extraction ?
A
25,000 ft.
6
Q
Max APU altitude to assist main engine start ?
A
21,000 ft.
7
Q
APU door limitation ?
A
. With APU door open
220 kts
. Or the APU must me
operating through out
the flight
