How should an aircraft be notified that its radar identification has been established?

When notifying an aircraft that its radar identification has been established, using the phrase "Radar contact" is the standard protocol. This phrase communicates to the pilot that the aircraft's position is being accurately tracked and that radar identification has been successfully established. This clear and concise terminology is essential in ensuring that both the controller and the pilot understand that the aircraft is now under radar surveillance, improving situational awareness and safety.

Establishing radar contact is a critical part of air traffic control operations, as it allows controllers to provide more precise instructions and services to the aircraft. The phrase is universally recognized in aviation communication, reducing the potential for misunderstandings. By using "Radar contact", the controller provides reassurance to the pilot about their tracking status, fostering effective communication in the busy environment of air traffic operations.