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Above 15,000 feet MSL cabin pressure altitude, who must be provided with supplemental oxygen?

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  1. Only the pilot in command
  2. Only passengers who ask
  3. Every occupant

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References

  1. 14 CFR 91.211 Supplemental oxygen (Cornell LII mirror of eCFR) www.law.cornell.edu/cfr/text/14/91.211 Checked 2026-10-10.
  2. 14 CFR 91.211 Supplemental oxygen (Cornell LII mirror of eCFR) www.law.cornell.edu/cfr/text/14/91.211 Checked 2026-10-10.
  3. AIM chapter 8 section 1, Fitness for Flight www.faa.gov/air_traffic/publications/atpubs/aim_html/chap8_section_1.html Checked 2026-10-10.

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FlyingAbove what cabin pressure altitude must supplemental oxygen be provided to every occupant of the aircraft?FlyingCabin pressure altitude is between 12,500 and 14,000 feet MSL. After how long must the required crew use oxygen?FlyingAt cabin pressure altitudes above 12,500 and up to 14,000 feet, crew must use oxygen after how much time?

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