Oxygen Questions

Question 1

Where can O2 pressure be read?

Answer 1

• MFD STATUS page (corrected for temperature)

- At the O2 cylinder panel (un-corrected for temperature)

Question 2

Do the cockpit crew and the passengers share the same emergency O2?

Answer 2

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

Question 3

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

Answer 3

No

Question 4

What is the minimum O2 for 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
• Mask microphone
• Flight deck speakers

Question 6

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

Answer 6

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

Question 7

what type of oxygen will the quick-donning cockpit crew mask provide?

Answer 7

• Emergency pure O2 with positive pressure
• 100% pure O2 at all times
• Normal Oxygen/air mixture (ratio depends on cabin altitude

Question 8

During preflight how would you know if the cockpit crew O2 has been over pressurized?

Answer 8

• The green blowout disc would be missing on the forward right side of the fuselage

Question 9

What is the O2 duration for the following?

Answer 9

• Passengers O2 12 min
• Flight attendant cylinder 30 min
• PBE 15 min

Question 10

When will the passenger O2 mask automatically deploy?

Answer 10

• Cabin altitude of 14,000 feet MSL

Question 11

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

Answer 11

• Yes, via a manual release tool (MRT) located at each FA station.

Question 12

When does the PBE provide?

Answer 12

• Pressured O2 and protection from, fumes, and fire up to 40,000 ft for at least 15 min
• Blue indication: Good
• Pink indication: Bad
• Vacuum loss Bad: (even with a blue indication)

Question 13

How many portable O2 cylinders are installed in the cabin?

Answer 13

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

- 2 masks per cylinder