Pneumatic System

Question 1

Pneumatic system supplies air for

Answer 1

Air Cond
Pressurization
Airframe Deice
Door Seal Pressurization
Engine Oil Cooling Ejection System

Question 2

P2.2 Provides

Answer 2

Cooling for pneumatic air for deice boots and sometimes high stage precooler for P3 air (in high temp situation)

Question 3

What does the bleed air selector do?

Answer 3

Modulates NSOV air volume

Question 4

Bleed switches off:

Answer 4

Closes NSOVs

Question 5

Bleed Switches on:

Answer 5

ECU opens respective NSOV

bleed air flows through pack

Question 6

What causes the BLEED HOT caution lights and bleed system to shutdown

Answer 6

Over temp, over pressure, bleed leak

Question 7

Inflatable Door Seals:

Answer 7

Main Cabin Door and Rear Cargo Door

Pressure supplied by the deice system