Why climbers climbing high mountain peaks need oxygen but airplane passengers flying in high altitude don’t need oxygen?

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Why climbers climbing high mountain peaks need oxygen but airplane passengers flying in high altitude don’t need oxygen?

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Anonymous 0 Comments

You’ve already gotten several answers.
Adding FAA regs.

14 cfr § 135.89 stipulates the rules on oxygen. They start at 10,000 Mean Sea Level. Above that oxygen considerations need to be made for pilots.
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