Tutorial: FAA Exam: When Is Supplemental Oxygen Required?

FAA Exam: When Is Supplemental Oxygen Required?

By thecorporatepilotdad

If flying in an UNPRESSURIZED airplane at 13,000 feet, is oxygen
required, and if so, when is it required? What about passengers? Are
they required to use oxygen or can it just be supplied to them? This
question

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