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by mwint
945 days ago
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Pilot here - it's legal to fly at 12,500 in an unpressurized aircraft indefinitely. See https://www.ecfr.gov/current/title-14/chapter-I/subchapter-F.... Cabin pressurization is set to a lower altitude, but that's not for a legal requirement. It's just nicer to be at higher pressurization. And, I mean, think about it - there are _towns_ at 9k+ feet. |
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This one? https://www.law.cornell.edu/cfr/text/14/25.841