What are typical dimensions of Class D airspace?

Class D airspace typically has a radius of 4 nautical miles from the center of the airport and extends vertically from the surface up to 2,500 feet above ground level (AGL). This structure is designed to provide controlled airspace around airports with an operational control tower, facilitating the safe and efficient movement of aircraft during takeoff and landing while maintaining safety for both air traffic and the surrounding area.

Understanding the dimensions of Class D airspace is essential for pilots, as it dictates the requirements for communication with air traffic control and the responsibilities of the flight operation. The specified radius and ceiling also align with the operational needs of busy airports, where the volume of arrivals and departures necessitates clear and defined airspace boundaries for organization and safety.