Oxygen Flashcards
What type of masks does the crew have?
Quick donning diluter masks
What are the 3 modes of oxygen mask operation?
Diluted
100%
Emergency
How do you get positive pressure oxygen in the mask?
By selecting emergency mode
What does a purge valve do?
Purges smoke out of the mask.
What type of oxygen masks do the passengers have?
Chemical oxygen generators and continuous flow masks.
What happens when the cabin altitude is above 10,000’?
3 chimes and a “cabin” aural warning
What can you do if the oxygen door does not open?
Open it manually with the tool
How long does the oxygen generator produce oxygen for?
12 minutes
Should passenger use oxygen masks with smoke in the cockpit?
No? Oxygen is diluted with ambient air.
Where are the oxygen bottles located?
1 at each end of the cabin
What is the amount and pressure in the large and small oxygen bottles?
Large - 11 cu ft - 1200psi
Small - 14.5 cu ft - 1550psi
How long do the portable oxygen bottles supply oxygen?
30 minutes
How long does the PBE provide oxygen for?
15 minutes
How many PBE’s are in the aircraft?
3
1 in the cockpit and each end of the cabin.
When does the oxygen low pressure come on?
Under 12 minutes or 450psi
