Pressurization

Question 1

Max cabin altitude on a flight over 2.5 hours

Answer 1

7460

Question 2

Outflow valve position with the AC on the ground?

Answer 2

fully open

Question 3

How many motors can drive the outflow valve?

Answer 3

2 in auto, 1 in manual

Question 4

Pressurization - What causes the safety valve to operate?

Answer 4

differential pressure of 8.7 psi

Question 5

Max positive and negative differential pressure?

Answer 5

9.25/-0.73

Question 6

During single pack operations, if diff pressure reaches above 4 psi, what happens to the outflow valves?

Answer 6

Aft outflow valve closes and forward outflow valve controls pressure