Pressurisation Flashcards
1
Q
Maximum Δ for takeoff and landing
A
0.125psi
2
Q
Standard cabin altitude at 41000ft
A
8000ft
3
Q
What occurs when the cabin altitude exceeds 10000ft?
A
Audio warning
4
Q
What occurs when the cabin altitude exceeds 14000ft?
A
Cabin O2 masks deploy
5
Q
Maximum pressure below 28000ft
A
7.45psi
6
Q
Maximum pressure below 37000ft but above 28000ft
A
7.8psi
7
Q
Maximum pressure differential above 37000ft
A
8.45psi
8
Q
Maximum Δ cabin pressure for the relief valve to open
A
9.1psi
9
Q
When can bleeds on and packs high be used?
A
Only for cruise, climb and descent
10
Q
How many packs does one engine provide air to?
A
1
11
Q
How many packs does the APU provide air to in the air?
A
Just the one pack.
12
Q
How many packs does the APU provide air to on the ground?
A
Two packs, as opposed to one in the air.
