Which type of airspace is primarily designed for aircraft around airports?

Class D airspace is specifically designed to manage air traffic around airports, particularly those with control towers. This type of airspace generally extends from the surface up to a certain altitude, typically 2,500 feet above ground level, and encompasses the airspace immediately surrounding an airport. The purpose of Class D airspace is to provide a safe and organized environment for both arriving and departing aircraft as they transition near the airport, ensuring that air traffic controllers can efficiently manage the flow of aircraft in and out of the area.

In Class D airspace, communication with air traffic control is mandatory, which assists in coordinating the movements of various aircraft, including smaller general aviation flights and larger commercial operations. The established procedures help to prevent potential conflicts between aircraft, given the high density of traffic around busy airports. This controlled environment is essential for maintaining safety as numerous flights operate simultaneously in close proximity.

Other types of airspace such as Class A, Class C, and Class E serve different purposes and cover different altitudes and traffic requirements, making Class D the most suitable answer for managing aircraft specifically around airports.