What type of code is assigned by ATC to a single aircraft for radar identification and tracking?

The type of code assigned by Air Traffic Control for radar identification and tracking of a single aircraft is known as a discrete code. This specific code is a unique four-digit transponder code that helps distinguish one aircraft from another on radar. When an aircraft is assigned a discrete code, it allows controllers to monitor its position, track its movements, and maintain situational awareness, providing a level of safety in busy airspace.

Discrete codes differ from other types of codes, such as flight codes or identification codes, in that they are specifically tailored for individual flights and ensure that there is no overlap with other aircraft. This prevents any potential confusion during tracking and communication. By using discrete codes, air traffic controllers can effectively manage air traffic and provide timely instructions to pilots, thereby enhancing the overall safety and efficiency within the airspace system.