Define "Clearance Delivery" in the context of air traffic services.

Clearance Delivery primarily refers to the air traffic service responsible for providing pilots with their flight clearance prior to taxiing. This encompasses issuing flight plans, ensuring that all necessary departure clearances are granted, and providing related information that the pilot needs to commence their flight safely and in compliance with regulations.

When pilots approach a controller at Clearance Delivery, they can expect to receive important clearances that not only confirm the filed flight plan but also outline any specific instructions regarding taxi routes and departure procedures. This communication is crucial for preventing conflicts on the ground and ensuring the orderly flow of aircraft departing from an airport.

Understanding the role of Clearance Delivery is essential for pilots, as it sets the stage for a safe and efficient transition from the ground to the airspace system. While the other services mentioned, such as in-flight communications and approach management, are also vital components of air traffic control, they function at different stages of the flight.