What is the designated phrase used to request a radar check during urgency communication?

The phrase "REQUEST RADAR CHECK" is the designated communication used when an aircraft wants to explicitly ask air traffic control for a radar position check during urgency situations. This phrase clearly indicates the pilot's intention and the nature of the request, facilitating effective communication between the pilot and air traffic control. When pilots use this specific terminology, it allows ATC to understand the urgency of the situation and respond promptly to provide the necessary assistance. Clear and unambiguous communication is critical in aviation, especially in situations where safety may be at risk, and using standard phrases helps ensure that messages are conveyed accurately and efficiently.