Title text:
We should have you at the gate in just under two hours--two and a half if we get pulled over.
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Source: https://xkcd.com/3124/
this post was submitted on 04 Aug 2025
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That is true for the 12,500, 14,000, and 15,000 feet cabin pressure numbers I gave, yes.
However, the oxygen requirement associated with the 35,000 foot number I gave applies to both pressurized and unpressurized flight. If your aircraft is at or above 35,000 feet pressure altitude, at least one of the pilots must be on oxygen, or must have a quick-donning mask available at all times.