What are the dimensions of Class D airspace?

Class D airspace typically extends from the surface up to 2,500 feet above the airport elevation and usually has a radius of 4 nautical miles from the center of the airport. This airspace is designed to protect aircraft operating in the vicinity of airports with an operating control tower and to ensure safe and efficient operations.

The specified height of 2,500 feet allows for adequate vertical separation of air traffic in the vicinity of the airport while still providing sufficient airspace for arriving and departing flights. The 4 nautical mile lateral distance ensures that air traffic is adequately managed during takeoff and landing phases, reducing the risk of conflict between aircraft.

This configuration is critical for maintaining safety in busy airspace around airports, where the volume of air traffic can be high. Understanding the dimensions of Class D airspace is important for pilots and aviation professionals, as it dictates the requirements for communication with air traffic control and aircraft operations in these areas.