Oxygen

Question 1

For Smoke, how should the Oxygen Dilutor be set?

How long will it last?

At what Cabin Altitude?

Answer 1

Use 100% oxygen

Good for flight crew and observers for 15 mins

Cabin Altitude of 8,000ft

Question 2

During a cruise of FL100, how long will the oxygen last for 2 flight crew of two?

Answer 2

107 mins

Question 3

During an Emergency Descent, what setting should the Oxygen Dilutor be set to?

How long will the oxygen last for flight crew and observers?

Answer 3

Set the Oxygen Dilutor to N to save oxygen. (A mix of oxygen and cabin air)

13 mins

Question 4

If the crew member is bearded, can this affect the oxygen time?

Answer 4

Yes. It may be shorter based on mask seal on face

Question 5

When is the OXY pressure indication on the SD Door/Oxy page green?

Answer 5

At or above 800 psi

Question 6

When is the OXY pressure indication on the SD Door/OXY page “pulsing” green?

Answer 6

Below 800 psi and the SD Door/OXY page is automatically displayed

Question 7

When is the OXY pressure indication on the SD Door/OXY page amber?

Answer 7

Below 400 psi

Question 8

When does the amber half frame appear on the SD Door/OXY page?

Answer 8

Below 1,500 psi and on the ground

Question 9

When does the amber OXY appear on the SD Door/OXY page?

Answer 9

When the Oxygen Crew Supply pb on the Oxygen panel is switched off

Question 10

When does the amber REGULAR LO PR on the SD Door/OXY page appear?

Answer 10

When a low pressure is detected in the circuit to the mask