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AirspaceQuestion 146 of 934

What may happen to a part-time Class D surface area when the control tower closes?

  1. It becomes Class C airspace until the tower opens
  2. It becomes Class B airspace with no radio requirement
  3. It may revert to Class E surface area or Class G
  4. It stays Class D, and the same radio rules apply
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Correct answer: It may revert to Class E surface area or Class G

A part-time Class D area may become Class E or Class G. The Chart Supplement gives the details.

Source: Aeronautical Information Manual (FAA, Basic with Change 3, 9 July 2026), AIM 3-2-5 Class D Airspace — Part-time Tower, page 186

Practice airspace

Questions last reviewed: 18 October 2026