History — 703.68

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FIRST SEENsnapshot of 2026-03-01 · consolidation amended to 2025-12-09

Text as first captured

703.68 No air operator shall operate an aircraft with passengers on board above FL 250 unless the aircraft is equipped with oxygen dispensing units and an undiluted supply of first aid oxygen sufficient to provide at least one passenger with oxygen for at least one hour or the entire duration of the flight at a cabin pressure-altitude above 8,000 feet, after an emergency descent following cabin depressurization, whichever period is longer.