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by cpncrunch 4477 days ago
No, the guy is just misinformed. You won't become unconscious at 12500ft. In fact it's perfectly legal to fly at 12000ft for 30 mins. Pikes Peak is 14115ft and I don't think people are all becoming unconscious up there. Also there will always be a very obvious alarm sounding when there is a depressurization. In the Helios flight they just thought the warning was something else (i.e. pilot error / incompetence).