Regulations & currency

Oxygen requirements

Crew and passenger oxygen rules by cabin altitude and time.

Framework only, the exact cabin altitudes and times are set in GACAR Part 91. Confirm there before relying on it.

Cabin pressure altitudeRequirement
Above ~10,000 ft for an extended periodSupplemental oxygen for the flight crew
Above ~13,000 ftOxygen for the flight crew at all times
Sustained high cabin altitudeOxygen provided for the passengers
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How it works
Supplemental-oxygen requirements increase with cabin altitude and exposure time. The exact thresholds are in GACAR Part 91, this shows the structure only.

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