Oxygen Flashcards
what does the Green indication on crew O2 mean
sufficient O2 for 3 crew members
Why may there be a disagreement between the O2 level on MFD and that on the outside gauge
MFD data is corrected for Temperature
what does the CYAN indication on crew O2 mean
sufficient O2 for 2 crew members
what does the ANBER indication on crew O2 mean
Not enough O2 for dispatch
what does the AMBER DASHED indication on crew O2 mean
invalid information or a value out of the valid range.
what can the crew O2 bottle be pressurized to
1850 psi at 21C
How much O2 is available to the crew after a loss of cabin pressure
Enough to provide for all cockpit members to permit emergency descent from 41000 ft to 10000 ft in 22 min with mask regulator on 100% mode and continuing cruise at 10000 ft for 98 min with mask regulator on NORMAL mode.
when will the O2 mic become active
Automatically when the O2 mask’s doors are opened. The mic will deactivate when the test/reset button is pressed
What crew O2 is supplied in NORMAL mode
supplemental oxygen diluted with cabin air according to the cabin pressure altitude until a preset point when the crew member breathes 100%
What crew O2 is supplied in 100% mode
100% regardless of cabin pressure
What crew O2 is supplied in EMERGENCY mode
100% at a slightly positive pressure. This helps with smoke/fume removal from mask
How long will the PBE provide O2
15 mins
What color is acceptable on the PBE humidity indicator
Blue: Good, Pink: Bad
If the PBE humidity indicator is found to be bad, within how much time should the PBE be replaced
36hrs
To where does the Passenger O2 system provide O2
- passenger service units (PSU)
- flight attendant stations
- lavatories
- galley areas.
