Oxygen Questions Flashcards
Where can O2 pressure be read?
- MFD ‘STATUS’ page (corrected for temperature)
- At the O2 cylinder panel (un-corrected for temperature)
Do the cockpit crew and the passengers share the same emergency oxygen?
- No, the cockpit crew uses an O2 cylinder and the cabin passengers use O2 chemical generators
Once the chemical O2 generators are started can they be shut off?
- No
What is the minimum O2 for a cockpit crew?
- 2 crew “Blue for 2”
- 3 crew “Green for 3”
What activates when the flight deck O2 masks are removed from their storage unit?
- Flow of O2
- Mask microphone
- Flight deck speakers
What happens if the TEST/RESET button is pressed while the flight deck O2 masks are not stowed?
- Stops flow of O2
- Deactivates mask microphone
- Deactivates flight deck speakers
What type of oxygen will the quick-donning cockpit crew masks provide?
- Emergency - Pure oxygen with positive pressure
- 100% - Pure oxygen at all altitudes
- Normal - Oxygen/air mixture (ratio depends on cabin altitude)
During preflight how would you know if the cockpit crew O2 has been over pressurized?
- The green blow-out disc would be missing on the forward right side of the fuselage
What is the O2 duration for the following?
- Passenger 02
- Flight Attendant Cylinder
- PBE
- Passenger O2 12 min
- Flight Attendant cylinder 30 min
- PBE 15 min
When will the passenger O2 masks automatically deploy
- Cabin altitude of 14,000 MSL
Can the O2 door dispensing units be opened manually if it fails to automatically deploy?
- Yes, via a Manual Release Tool (MRT) located at each FA station
What does the PBE provide?
- Pressurized O2 and protection from smoke, fumes, and fire up to 41,000 ft. for at least 15 minutes
- Blue indication: Good
- Pink indication: Bad
- Vacuum loss: Bad (even with a blue indication)
How many portable O2 cylinders are installed in the cabin?
- 2, one in the FWD section and 1 in the AFT section
- 2 masks per cylinder
