FCOM A/C and Pressurization Flashcards
1
Q
Do not select AIR SOURCE to ??? while the airplane is on the ground
A
TRIM AIR ONLY
2
Q
When must the pack be operating (APU or engine running and AIR SOURCE switch
– NORM or PACK ONLY) when the airplane electrical power is on (BATTs or
EXT PWR – On)?
A
… for more than 30 min while OAT > 40C
3
Q
Crew and Pax O2 masks are not approved for use above?
A
40,000’ cabin altitude.
4
Q
Prolonged operation of Pax O2 masks above ??? altitude is not recommended
A
25,000’ cabin altitude
5
Q
Max diff pressure on the ground during taxi
A
0.1 psi
6
Q
Max negative differential pressure?
A
-0.5 psi
7
Q
Max differential pressure?
A
9.4 psi
8
Q
Max differential pressure during landing
A
1.0 psi
