A/C and pressurization Flashcards
1
Q
What regulates temperature and pressure?
A
ECS (environmental Control System)
2
Q
Where does the bleed air come from to operate the ECS
A
one or both engines
APU
Ground air supply cart
3
Q
What is the ram air scoop used for?
A
Located at the base of the fin it collects outside air to cool the hot bleed air
4
Q
Which pack goes to which compartment?
A
Left pack for flight deck
Right pack for passenger cabin
5
Q
Recirc fan must be off when the cabin temp is above?
A
32C
6
Q
During an in-flight emergency with both packs failed what do you do?
A
The ram air is used to circulate air through the cabin and flight deck
7
Q
How is the CRJ900 pressurized?
A
Uses the air from the AC system
8
Q
what cabin altitude is maintained at FL410?
A
8000 ft
never exceeding 15000 ft
