Practice question

What is the official ICAO definition of a Control Zone (CTR)?

  1. A controlled airspace extending upwards from the surface of the earth to a specified upper limit
  2. A controlled airspace extending upwards from a specified height above the surface of the earth
  3. An advisory airspace established around unpowered glider operations
  4. A non-controlled airspace established around military training sectors

Answer: A — A controlled airspace extending upwards from the surface of the earth to a specified upper limit

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