Pneumatics System

Question 1

Pneumatic Air is supplied by high-Pressure or low-pressure from where?

Answer 1

Engine bleed air or APU bleed air.

Question 2

True or False: HP and LP can be used simultaneously.

Answer 2

False.

Question 3

Does the APU BLEED AIR button need to be on for service air availability?

Answer 3

No, it’s available anytime either engine or APU are running.

Question 4

What 2 functions does Service air ensure.

Answer 4

1: Keep ACM outlet above freezing.
2: Hold the Cabin Recirculation open

Question 5

Is bleed air leak detection available throughout the system?

Answer 5

Yes.

Question 6

True or False: Amber TAIL BLEED LEAK CAS message automatically closes associates valves.

Answer 6

False.

Question 7

True or False: Amber BLD LEAK CAS message automatically closes associated valves.

Answer 7

True.

Question 8

What cools engine bleed air?

Answer 8

Pylon bypass air.

Question 9

APU bleed air can be used in place of engine bleed air except for?

Answer 9

Anti-Ice and Emergency Pressurization.

Question 10

True or False: PRESS SOURCE selector controls bleed air from engines for environmental and Pressurization systems.

Answer 10

True.

Question 11

EMER PRESS activates because of?

Answer 11

ACM overheat, ACM bleed leak, or cabin altitude excess 14,500 feet.

Question 12

Amber EMER PRESS CAS message, where does bleed air come from?

Answer 12

Left engine.

Question 13

Amber HP VALVE OPEN CAS message displays when ____ Valve is open and should be closed.

Answer 13

HP valve.

Question 14

HP shutoff valves, BLD AIR shutoff valves and both mass flow valves remain OPEN or CLOSED when loss of DC power?

Answer 14

OPEN