Radio communicationsQuestion 793 of 934

A ground vehicle with a radio works on the movement area of an airport that has no operating tower. Which frequency should the driver monitor?

  1. The ATIS frequency
  2. The emergency frequency 121.5 MHz
  3. The nearest Flight Service frequency
  4. The CTAF
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Correct answer: The CTAF

Airport ground vehicles with radios should monitor the CTAF and keep radio calls to safety matters.

Source: Aeronautical Information Manual (FAA, Basic with Change 3, 9 July 2026), AIM 4-1-10 IFR Approaches/Ground Vehicle Operations, page 210

Practice radio communications

Questions last reviewed: 18 October 2026