oxygen Flashcards

1
Q

where can teh o2 pressure be read?

A

MFD STATUS page (corrected for temp)
At the o2 cylinder panel (uncorrected for temp)

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2
Q

do the cockpit crew and passengers share teh same emergency o2?

A

no, cockpit crew uses an o2 cylinder and cabin pax use o2 chemical generators

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3
Q

once the chemical o2 generators are started, can tehy be shut off?

A

no

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4
Q

what is the min o2 for cockpit crew? 2 vs 3

A

3 crew - green 1150 PSI
2 crew - blue 852 PSI

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5
Q

what activates when the flight deck o2 masks are removed from their storage unit

A

flow of 02
masks microphone
flight deck speakers

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6
Q

what happens if the test/reset buton is pressed while teh flight deck o2 masks are not stowed?

A

stops the flow of 02
deactivates mask microphone
deactivates flight deck speakers

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7
Q

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

A

emergency - pure o2 with positive pressure

100% - pure o2 at all altitudes

normal - oxygen/air mixture (ratio depends on cabin altitudes)

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8
Q

during preflight how would you know if the cockpit crew o2 has been over pressurized?

A

the green blow-out disc would be missing on the forward right side of the fuselage

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9
Q

what is the o2 duration for the following?
passenger
flight attendant cylinder
PBE

A

passenger o2 - 12 min

flight attendant - 30 min

PBE - 15 min

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10
Q

when will the passenger o2 masks automatically deploy

A

cabin altitude 14,000’ MSL - 14,750’

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11
Q

can the o2 door dispensing units be opened manually if it fails to automatically deploy?

A

yes via a manual released tool (MRT) located at each FA station

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12
Q

what does a PBE provide?

A

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)

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13
Q

how many portable o2 cylinders are installed in the cabin?

A

2, one in the FWD section and 1 in the AFT section
2 masks per cylinder

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