What is required before entering Class D airspace?

Establishing communication with the appropriate ATC unit before entering Class D airspace is crucial because Class D airspace is typically associated with airports that have an operational control tower. Pilots are required to communicate with air traffic control (ATC) to receive necessary information regarding traffic, weather, and any other relevant instructions that may affect safety within that airspace.

When entering Class D airspace, pilots should ensure they have radio contact with the tower to obtain clearance to enter and receive any specific instructions for their approach or departure. This protocol helps maintain organized traffic flow and enhances safety for all aircraft operating in or near the airspace.

While checking weather conditions, obtaining clearances from other aircraft, or completing a flight plan may be relevant to overall flight preparation and safety, they are not specific requirements for entering Class D airspace. Establishing communication with ATC is the definitive action necessary to comply with the regulations governing that airspace.