Oxygen

Question 1

What is normal oxygen pressure?

Answer 1

1850 psi at 70°F (21°C)

Question 2

What size is the oxygen bottle?

Answer 2

77 cu in

Question 3

Minimum oxygen for dispatch?

Answer 3

• 3 crew members (green)- 1150 psi

* 2 crew members (blue)- 842 psi

Question 4

What happens if the test/reset button is pressed while the flight deck O2 masks are not stowed?

Answer 4

• Stops flow of O2
• Deactivates mask microphones
• Deactivates flight deck speakers

Question 5

When will passenger masks automatically deploy?

Answer 5

Cabin altitude above 14,000 ft

Question 6

How long will the PBE supply oxygen for?

Answer 6

15 mins

Question 7

What does the color indicator in the PBE mean?

Answer 7

• Blue - good
• Pink - bad
• Vacuum loss - bad (even with a blue indication)

Question 8

How long does the passenger O2 systems supply oxygen for?

Answer 8

12 mins

Question 9

Can the passenger O2 generators be shut off after they started?

Answer 9

No

Question 10

Where is the crew oxygen bottle located?

Answer 10

Forward cargo compartment

Question 11

What happens when the passenger masks are deployed manually or automatically?

Answer 11

Seatbelt and electronic devices sign illuminates automatically

Question 12

Where can the O2 pressure be read?

Answer 12

• MFD status page (corrected for temp)

* O2 cylinder panel (uncorrected for temp)

Question 13

How long is the O2 duration for the flight attendant cylinder?

Answer 13

30 mins

Question 14

How many portable O2 cylinders are in the cabin?

Answer 14

• 2 total

* 1 in the FWD and 1 in the AFT