Oxygen Limiations

Question 1

What is the minimum oxygen required for a particular flight and flight crew?

Answer 1

As specified in the tables in LIM chapter

Question 2

Following a loss of cabin pressure, the minimum oxygen required for a particular flight and flight crew, assumes the mask regulator is in what position?

Answer 2

The assumption is that the mask regulator is in the NORMAL (diluted oxygen ) position.

Note : based on the use of a sealed mask, maybe shorter for bearded crew (in terms of performance, pressure or duration).

Question 3

For what duration are all the crew members protected by the oxygen system in the event of smoke with 100% Oxygen selected?

Answer 3

For A320/A330
It provides protection for 15min at 8000ft

Note : the above times which are based on the use of a sealed mask, maybe shorter for bearded crew (in terms of performance, pressure or duration)