O2 and Cypriot airliner crash

Bucky wrote:

wrote:

40,000 15 seconds
35.000 20 seconds
30,000 30 seconds


I don't get it. Can't a person stay conscious for longer than 30
seconds without breathing? Most people can hold their breath for over
a minute.

If the drop in pressure is rapid, can a person hold in the air? Or
perhaps it is expelled because the pressure in the lungs is double the
cabin pressure?


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Eric Greenwell
Washington State
USA