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Equipment and documentsQuestion 132 of 351

Your unpressurized aircraft flies 45 minutes at 11,500 feet ASL cabin-pressure-altitude. For whom must oxygen be available?

  1. All crew members and 10 per cent of passengers, but at least one passenger
  2. Only the pilot
  3. All persons on board the aircraft
  4. No one, because the altitude is below 13,000 feet
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Correct answer: All crew members and 10 per cent of passengers, but at least one passenger

The table requires oxygen for crew and 10 per cent of passengers when a flight exceeds 30 minutes between 10,000 and 13,000 feet ASL.

Source: Canadian Aviation Regulations (SOR/96-433), CAR 605.31(1) Oxygen Equipment and Supply

Practice equipment and documents

Questions last reviewed: 18 October 2026