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Flashcards in Oxygen Deck (8)
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1

How is oxygen flow indicated?

Yellow blinker flow meter.

2

What is the significance of the OXY ON white flags?

And the TEST slides?

- As soon as the left flap door opens, the mask is supplied with oxygen and, once it closes (mask still supplied with oxygen).
- The function of the test slide is to test the operation of the oxygen system.

3

How is EMERGENCY OXYGEN flow tested?

Hold the reset/test button and press the emergency pressure selector.

4

Squeezing the red clips does what?

Unlocks the two flap door, and permits the harness to inflate.

5

How does the over pressure selector work?

- Pressing the EMERGENCY knob generates an overpressure for a few seconds.
- Turning the knob, in the direction of the arrow generates a permanent overpressure.
- Overpressure supply is automatically started when cabin altitude exceeds 30,000’
- Overpressure supply is available only when the N/100% selector is set on the 100% position.

6

On the SD (doors) page, "OXY" (amber) means what?

When the pressure is below a certain PSI [MSN dependent] or crew supply pb is off.

7

What should you do if the oxygen pressure indication has a half-box (half frame) in amber?

And REGUL LO PR is indicated?

- Turn the crew supply on by pressing the p/b on the OHP.
- Refer to FCOM Oxygen requirements to ensure you have sufficient quantity.
(Both questions)

8

On the overhead panel, "SYS ON" indication means what?

Cabin oxygen masks have been deployed.