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Radio communicationsQuestion 251 of 934

How should a pilot say the altitude 10,000 feet in a radio call?

  1. "Ten thousand"
  2. "One zero thousand"
  3. "One thousand"
  4. "Flight level one zero zero"
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Correct answer: "One zero thousand"

Numbers above 9,900 are spoken by separating the digits before the word "thousand."

Source: Aeronautical Information Manual (FAA, Basic with Change 3, 9 July 2026), AIM 4-2-8 Figures, page 233

Practice radio communications

Questions last reviewed: 18 October 2026