Oxygen

Question 1

Where can O2 pressure be read?

Answer 1

MFD status page (corrected for temp)

At the O2 cylinder panel (uncorrected for temp)

Question 2

Do the cockpit crew and the passengers share the same emergency oxygen?

Answer 2

No, the cockpit crew uses an O2 cylinder and the cabin passengers use O2 chemical generators

Question 3

Once the O2 chemical generators are started can they be shut off?

Answer 3

No

Question 4

What is the minimum O2 for a cockpit crew?

Answer 4

2 crew: Blue for 2

3 crew: Green for 3

Question 5

What activates when the flight deck O2 masks are removed from their storage unit?

Answer 5

Flow of O2
Deactivates mask microphone
Deactivates flight deck speakers

Question 6

What type of oxygen will the quick-donning cockpit crew masks provide?

Answer 6

Emergency: Pure O2 with positive pressure
100%: Pure O2 at all altitudes
Normal: Oxygen/air mixture

Question 7

O2 over pressure on preflight

Answer 7

O2 blowout disc

Question 8

What is the O2 duration for pax, FAs and PBEs?

Answer 8

Pax: 12 minutes
FA cylinder: 30 minutes
PBE: 15 minutes

Question 9

When will the pax O2 masks automatically deploy?

Answer 9

Cabin alt of 14,000 ft

Question 10

Can the O2 door dispensing units be opened manually if it fails to automatically deploy?

Answer 10

Yes, via a Manual Release Tool located at each FA station

Question 11

What does the PBE provide?

Answer 11

Pressurized O2 and protection from smoke, fumes and fire up to 40,000ft for at least 15 minutes
Blue indication: good
Pink indication: bad

Question 12

How many portable O2 cylinders are installed in the cabin?

Answer 12

2, one in the FWD section and 1 in the AFT section

2 masks per cylinder