Pilot Exam Coach

US Private Pilot

Switch to Canada PSTAR
Aeromedical factorsQuestion 744 of 934

A scuba diver makes a dive that needs no controlled ascent. How long should the diver wait before a flight up to 8,000 feet?

  1. At least 12 hours
  2. At least 4 hours
  3. At least 24 hours
  4. At least 48 hours
Show answer

Correct answer: At least 12 hours

After a dive that needs no controlled ascent, the wait is 12 hours for flights up to 8,000 feet.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 17: Aeromedical Factors — DCS After Scuba Diving, page 441

Practice aeromedical factors

Questions last reviewed: 18 October 2026