What is an acceptable action if radar contact is not established?

Taking immediate action to re-identify the aircraft is essential when radar contact is not established. This is crucial for maintaining situational awareness and ensuring the safety of all aircraft in your airspace. Radar contact is necessary for tracking an aircraft's position accurately, which informs separation decisions and operational efficiencies.

When radar contact is lost, promptly trying to re-identify the aircraft enables the controller to quickly assess its status and intentions, allowing proper sequencing and coordination with other aircraft in the vicinity. Implementing procedures such as asking the pilot for their position, intentions, or altitude information assists in re-establishing that essential link and enhances safety.

The other choices could lead to confusion or compromise air traffic safety. Waiting for the aircraft to re-establish contact could result in a significant lapse in situational awareness. Instructing the aircraft to hold back without clear identification may create unnecessary delays or miscommunication. Informing of a scope change, while potentially useful, does not directly address the immediate need for confirming the aircraft's identity and position when radar contact has been lost.