Pneumatics/Pressurization

Question 1

When does the BASC open HP air from 70% to100%?

Answer 1

Wing A/I On

Question 2

What cabin altitude does the outflow valve automatically close?

Answer 2

14,500’ (+/- 500’)

Question 3

CHECK CABIN (yellow CAS) comes on at what cabin altitude?

Answer 3

8,200’

Question 4

CABIN ALTITUDE (red CAS) comes on at what cabin altitude?

Answer 4

9,700’

Question 5

02 Masks automatically drop at what cabin altitude?

Answer 5

14,500’ (+/- 500’)

Question 6

Engine/APU bleed air to the cabin is cooled by the?

Answer 6

ECU

Question 7

Crossbleed valve is normally in the __________ position.

Answer 7

CLOSED

Question 8

What tanks is bleed air used to pressurize?

Answer 8

Water (HP)
Fuel
Hydraulic

Question 9

Loss of power to ENGINE A/I, valve fails _______?

Answer 9

OPEN

Question 10

When ‘EMERG PRESS’ is selected what does it do?

Answer 10

Give you manual control of the hot valves.

Question 11

Recirculation valve closes automatically at?

Answer 11

15,000’

Question 12

For the the cabin DUMP valve to work it needs what two things?

Answer 12

1. Electric Power
2. Air Pressure

Question 13

When is the X-Bleed valve open in AUTO?

Answer 13

1. Wing A/I
2. OEI
3. Heat Exchanger Jet Pump, <300 knots.