Which term indicates that radar contact with an aircraft has been established?

The term that indicates radar contact with an aircraft has been established is "Established." This phrase is commonly used in air traffic control to confirm that a controller can see the target aircraft on radar and is able to provide instructions or information based on that radar contact. When radar contact is established, it implies a clear and ongoing communication process where the controller is aware of the aircraft's position and can monitor its movements effectively.

In aviation terminology, clarity and precision are crucial, especially in communication with aircraft. The use of "Established" conveys to both the controller and the pilot that the connection has been made successfully, allowing for safe navigation through controlled airspace. Understanding this terminology is essential for effective air traffic operations and ensures safety in the skies.