Aeromedical factorsQuestion 738 of 934

Smoking at sea level can have physiological effects like flying at which altitude?

  1. 2,000 feet
  2. 8,000 feet
  3. 4,000 feet
  4. 12,000 feet
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Correct answer: 8,000 feet

Smoking raises the CO level in the blood. The effects are like flying at 8,000 feet.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 17: Aeromedical Factors — Carbon Monoxide (CO) Poisoning, page 434

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Questions last reviewed: 18 October 2026