Can you get hypoxia at 10,000 feet?

Gradual and progressive onset during flight above 10,000 feet altitude in the absence of normal pressurisation. This can arise either by climb above 10,000 feet without the pressurisation system functioning, or because of pressurisation system malfunction.



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Most pilots don't think too much about using portable oxygen. Sure, everyone knows that you have to use supplemental oxygen if you fly more than 30 minutes at cabin pressure altitudes of 12,500 feet or higher. And that at cabin altitudes above 14,000 feet pilots must use oxygen at all times.

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