Depressurization

Question 1

How long does the PSU supply O2 for passengers?

Answer 1

~12 minutes

Question 2

Passenger O2 masks drop automatically if what cabin altitude is exceeded?

Answer 2

14,000’

Question 3

For domestic airspace (lower 48 and Hawaii), what altitude should you descend to for a depressurization rapid descent?

Answer 3

FL180 until location and terrain elevation is determined, then down to 10,000 or lower.

Question 4

In international airspace (including Alaska) what altitude should you descend to for rapid depressurization?

Answer 4

10,000’ unless inside a terrain box. If in a terrain box, set FL250 until the terrain box altitude can be determined, then set the terrain box altitude