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Flight rulesQuestion 74 of 934

What is the minimum safe altitude over a congested area of a city?

  1. 500 feet above the highest obstacle within a horizontal radius of 1,000 feet
  2. 1,000 feet above the highest obstacle within a horizontal radius of 2,000 feet
  3. 1,000 feet above the highest obstacle within a horizontal radius of 1,000 feet
  4. 1,500 feet above the highest obstacle within a horizontal radius of 2,000 feet
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Correct answer: 1,000 feet above the highest obstacle within a horizontal radius of 2,000 feet

Over a congested area, the altitude is 1,000 feet above the highest obstacle within 2,000 feet horizontally.

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

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Questions last reviewed: 18 October 2026