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A320 Systems > Oxygen > Flashcards

Flashcards in Oxygen Deck (21)
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2
Q

What is the function of the N/100% selector of the oxygen masks in the cockpit?

A

100%: The mask delivers 100% oxygen

3
Q

What is the function of the EMERGENCY pressure selector of the oxygen masks in the cockpit?

A

This selector creates an overpressure which eliminates condensation and prevents smoke smell or ashes from entering the mask.

4
Q

How long should the smoke hood work satisfactorily?

A

The smoke hood uses a chemical air regeneration system which is the breathing key. The hood should work satisfactorily for at least 20 minutes.

5
Q

At approximately what cabin altitude should the passenger oxygen masks drop?

A

14,000ft (+0/-500ft).

6
Q

If the oxygen masks fail to deploy automatically how else can they be deployed?

A

They can be deployed by pressing the MASK MAN ON pb on the overhead panel.

7
Q

How is crew oxygen provided?

A

From a single bottle.

8
Q

What is the crew oxygen minimum pressure and where can it be read?

A

1300 PSI ECAM DOOR/OXY page.

9
Q

You deployed the cabin masks. What is their effective time of use once activated?

A

15 minutes.

10
Q

We are on the ground and the engines are not running. What is the appropriate ECAM page to get information about the Oxygen system?

A

The BLEED or the DOOR page.

11
Q

What happens during the pre-flight when you push to extinguish the CREW SUPPLY OFF light?

A

It electrically opens a valve in the avionic bay to supply low-pressure crew oxygen

12
Q

What would you notice on the DOOR ECAM page when you push to extinguish the CREW SUPPLY OFF light?

A

The OXY would change from amber to green

13
Q

What does the PASSENGER SYS ON light mean?

A

The signal to release the oxygen mask doors has been sent

14
Q

Where is oxygen stored for the crew?

A

In a single high-pressure cylinder

15
Q

Above what altitude will the crew oxygen masks proved 100% oxygen regardless of the position of the Normal/100% selector?

A

35,000 Feet

16
Q

What indication would you have of a crew oxygen cylinder thermal discharge?

A

The green disk on the lower left side of the forward fuselage would be missing

17
Q

Will the crew oxygen mask microphone automatically be deactivated when the mask is stowed?

A

No, you must press the RESET slide switch

18
Q

If the PASSENGER SYS ON light is on, does that mean that all the passenger oxygen masks have deployed?

A

No, the CC may have to manually deploy some of the masks

19
Q

What method is used to supply passenger cabin supplemental oxygen?

A

Chemical Oxygen Generators

20
Q

How do cabin occupants activate oxygen flow to their masks?

A

Pull the mask toward the seat

21
Q

How long does the PAX oxygen last?

A

13 minutes

22
Q

When do the masks automatically deploy?

A

When cabin altitude exceeds 14,000 Feet