Oxygen Flashcards
How would you check the status of the crew O2 outside the aircraft?
Green disc on forward RHS. If gone, no O2.
What is the crew oxygen pressurised to and how much is required for 3 and 2 crew?
1850psi
1500psi 3 crew
1100psi 2 crew
In the emergency mode, what is provided by the O2 system?
Possitive pressure at all altitudes, 100% O2
In normal mode, what is provided by the O2 system?
Mixed ratio of O2/air depending on altitude, pure O2 above 33,000ft
When would you get an OXYGEN LOW PRESSURE EICAS message and how much O2 would you have left
400psi
12 minutes
When does the passenger oxygen supply start to flow?
Once the pin is pulled. 12 mins of O2 above cabin alt of 14,000ft
Where would you find oxygen pressure indications? What are the green, amber and red limits?
ECS page of MFD
Green between 410 to 1850 psi.
Amber between 250 to 400 psi.
Red between 0 to 240 psi.
How long will a portable oxygen cylinder last?
30 min
How many PBE kits are on board and how long will they last?
3
15 min
