Air systems

Question 1

What sources supply air to the bleed are system?

Answer 1

Engines, APU, or and external air cart source on the ground

Question 2

What systems rely on bleed air for operation?

Answer 2

Air conditioning/pressurization
Wing thermal anti-icing
Engine thermal anti-icing
Engine starting
Hydraulic reservoir pressurization
Water tank pressurization
Nitrogen generation

Question 3

What is the purpose of the Engine Bleed Air Valve, and how is it operated?

Answer 3

Acts as a PRESSURE REGULATOR and SHUTOFF VALVE
DC controlled, pneumatically actuated

Question 4

What is the purpose of the pre cooler system?

Answer 4

Precooks the air

Question 5

What causes Bleed trip sensors to automatically close the Engine BLEED AIR VALVE

Answer 5

Overheat or Overpressure

Associated with a master caution and AIR COND annunciator

Question 6

How is the bleed trip condition reset?

Answer 6

Push the TRIP RESET switch

(Condition must no longer exist for a successful reset)