oxygen Flashcards
where can teh o2 pressure be read?
MFD STATUS page (corrected for temp)
At the o2 cylinder panel (uncorrected for temp)
do the cockpit crew and passengers share teh same emergency o2?
no, cockpit crew uses an o2 cylinder and cabin pax use o2 chemical generators
once the chemical o2 generators are started, can tehy be shut off?
no
what is the min o2 for cockpit crew? 2 vs 3
3 crew - green 1150 PSI
2 crew - blue 852 PSI
what activates when the flight deck o2 masks are removed from their storage unit
flow of 02
masks microphone
flight deck speakers
what happens if the test/reset buton is pressed while teh flight deck o2 masks are not stowed?
stops the flow of 02
deactivates mask microphone
deactivates flight deck speakers
what type of oxygen will the quick-donning cockpit crew masks provide
emergency - pure o2 with positive pressure
100% - pure o2 at all altitudes
normal - oxygen/air mixture (ratio depends on cabin altitudes)
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
flight attendant cylinder
PBE
passenger o2 - 12 min
flight attendant - 30 min
PBE - 15 min
when will the passenger o2 masks automatically deploy
cabin altitude 14,000’ MSL - 14,750’
can the o2 door dispensing units be opened manually if it fails to automatically deploy?
yes via a manual released tool (MRT) located at each FA station
what does a PBE provide?
pressurized O2 and protection from smoke, fumes and fire up to 40,000’ for at least 15 miin
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
