Oxygen Mask Limitation
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Join Date: May 2010
Location: FL250
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Oxygen Mask Limitation
Hello Folks! I had a query regarding the altitude limitation on sustained use of Oxygen masks by crew/pax:
A/C service ceiling : 45000
Crew Mask Limitation for sustained Use : 40000
Pax Mask limitation for sustained use: 25000
Looking for an answer as why is there an altitude limiting factor, so long as there is enough supply form the oxygen cylinders on board.
Thanks.
A/C service ceiling : 45000
Crew Mask Limitation for sustained Use : 40000
Pax Mask limitation for sustained use: 25000
Looking for an answer as why is there an altitude limiting factor, so long as there is enough supply form the oxygen cylinders on board.
Thanks.
