Bleed Air

Question 1

What are the sources of bleed air?

Answer 1

Engine
APU
Ground air

Question 2

Which systems use bleed air?

Answer 2

Air Con / Pressurization
Anti-Ice
Engine starting
Hydraulic reservoir pressure
Water tank pressure
Nitrogen generator

Question 3

Purpose of the Engine Bleed Air Valve?

Answer 3

Pressure regulator and shutoff valve
DC control, pneumatic operation

Question 4

What causes Bleed Trip Sensors to close the Engine bleed Air valve?

Answer 4

Overheat or overpressure

Question 5

How is the bleed Trip condition reset?

Answer 5

Trip Reset switch
(condition must no longer exist)

Question 6

What do the Wing body overheat, bleed Trip off and dual bleed lights mean?

Answer 6

WING-BODY OVERHEAT- leak in critical area air duct
BLEED TRIP OFF - overheat or over-press
DUAL BLEED- APU bleed and engine bleed both on

Question 7

Purpose of APU Bleed Air Valve?

Answer 7

Air to the left duct
DC control, pneumatic operation