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Flight rulesQuestion 76 of 934

A pilot flies over open water. How close may the aircraft be to any person, vessel, vehicle, or structure?

  1. No closer than 100 feet
  2. No closer than 300 feet
  3. No closer than 1,000 feet
  4. No closer than 500 feet
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Correct answer: No closer than 500 feet

Over open water or sparsely populated areas, the aircraft may not be closer than 500 feet to any person, vessel, vehicle, or structure.

Source: 14 CFR Part 91, § 91.119 Minimum safe altitudes: General.

Practice flight rules

Questions last reviewed: 18 October 2026