OXYGEN M11.15

Question 1

When does oxygen “flow” to the passenger oxygen masks?

Answer 1

When the mask is pulled downwards from the passenger service unit

Question 2

How can the oxygen flow into a crew oxygen mask be tested without moving the mask from its stowage?

Answer 2

By pressing the “press to test” button and watching the oxygen flow indicator

Question 3

If you inspect an oxygen storage bottle and find the pressure is 75psi, which action should you take?

Answer 3

Recharge the bottle

Question 4

You inspect an oxygen bottle and find that the pressure reads 1680psi and the normal pressure is 1850psi, does the bottle require charging before the next flight?

Answer 4

It depends on the air temperature, the relevant charging graph must be consulted

Question 5

Where is the crew oxygen pressure regulator located?

Answer 5

Close to the bottle to reduce the length of high pressure oxygen piping in the aircraft