S Oxygen Systems

Question 1

What is the normal cabin altitude for an aircraft?

Answer 1

8000ft

Question 2

When must cabin oxygen masks be deployed?

Answer 2

Automatically before the cabin altitude exceeds 15000ft

Question 3

Where is the cockpit oxygen pressure indicator located?

Answer 3

Before the pressure reducing non return valve

Question 4

What does the normal diluter demand indicator provide?

Answer 4

Mixture of oxygen and air, proportion of air increases with altitude, at 32000ft it is 100% oxygen

Question 5

What does EMERG diluter demand provide?

Answer 5

100% oxygen supplied at positive pressure to prevent inwards leakage of cabin air

Question 6

How long does a chemical oxygen generator last?

Answer 6

Up to 22 minutes

Question 7

How many masks must be installed?

Answer 7

10% more than seats fitted

Question 8

What’s the oxygen supply for a smoke hood?

Answer 8

Air filter connected to the hood, breathe cabin air

Question 9

What colour are aviation oxygen bottles?

Answer 9

• Black with a white neck
• Green, stapled with AV02