Oxygen

Question 1

EPAV stands for … ?

Answer 1

Electro Pneumatic Actuating Valve

Question 2

When fully charged, the O2 system pressure is … ?

Answer 2

1850 psi measured at the exterior fill port

Question 3

When the quantity of the cylinder is less than ______ liters, an amber OXYGEN QUANTITY LOW message displays.

Answer 3

700

Question 4

Electrical power is or is not necessary to supply the crew circuit for O2 distribution?

Answer 4

Is not necessary

Question 5

At what temperature should the masks be removed from the aircraft due to cold weather?

Answer 5

• 5 C/ 23 F or below. Stowed in a heated room and warmed to at least 15 C/ 59 F before use.

Question 6

Electrical power is or is not necessary to supply the passengers and the therapeutic circuit with oxygen?

Answer 6

Is necessary.

Question 7

For passenger AUTO and therapeutic modes, where does the electrical power come from?

Answer 7

Left Main Bus

Question 8

For passenger DEPLOY mode, electrical power comes from where?

Answer 8

Right Essential Bus

Question 9

In auto mode, passenger masks deploy at … ?

Answer 9

14,500’ +- 500’ and flow will continue until the cabin altitude drops below 9,500’ +- 500’

Question 10

In deploy mode, masks deploy … ?

Answer 10

Manual opening of passenger valve and deploys at any altitude