Oxygen Flashcards
1
Q
What happens when you press the Oxygen test/reset button with the mask stowed?
A
- tests the oxygen mask
- flow indicator start momentarily blinks
- Oxygen flow is audible through audio system.
2
Q
How do you return to normal operation after oxygen mask use?
A
- ensure mask box door is closed.
- press the test/reset button
- (this stops the oxygen flow and returns communication from cockpit speakers to headsets)
3
Q
What does EMERG selection provide?
A
100% oxygen under positive pressure.
4
Q
Where is crew O2 pressure displayed?
A
System status page on MFD
5
Q
What are minimum O2 values?
A
Green for three <1200 psi
blue for two 800-1200 psi
Amber no dispatch. <800 psi
6
Q
When do the passenger masks auto deploy?
A
cabin altitude between 14,000-14,750
7
Q
How long do the passenger masks provide oxygen?
A
12 min
8
Q
What does the OVRD position of the mask deploy switch do?
A
Deploy the masks regardless of cabin altitude.
