Air

Question 1

How many Pack controllers?
What happens when a Pack Controller fails?

Answer 1

• 2
• Pack outlet temp is regulated between 48°-59° f

Question 2

What regulates the temperature in the aircraft?

Answer 2

• The Zone controller.
• One controller with 2 channels.
• If it fails , temp is regulated to 68° f.

Question 3

The Hot Air system:

Answer 3

-Air tapped upstream of Packs.
- used to regulate temp of cockpit, cabin, and fwd cargo via Trim Air Valves.

Question 4

The forward Cargo compartment heated and cooled by?

Answer 4

-Heated by Hot Air 1
-Cooled by Pack 2

Question 5

The Cockpit is heated by:

Answer 5

-Hot air 1 through a restrictor valve.

Question 6

The valves in the Air Conditioning system are:

Answer 6

-Electrically controlled and pneumatically operated.

Question 7

The Ram Air scoop on the lower left side of the fuselage:

Answer 7

-Provide air in case of a dual Pack failure.
-Used for QRH Smoke/fumes removal.
-Will function unless Ditching PB is selected.
-Will not open if ∆P >1 psi.