What is NOT one of the three types of track?

The correct answer reflects an understanding of the terminology used in air traffic control regarding the management of aircraft tracks. In radar operations, there are various categories used to classify tracks based on their status and how they are being monitored or processed.

A track that is identified as "suspend track" does not exist within standard aviation terminology for tracking aircraft. The commonly recognized types include "active track," which represents an aircraft that is currently under active radar monitoring; "free track," which indicates an aircraft that is not being actively monitored or controlled but is still associated with the radar system; and "FLAT track," which is used to denote a specific type of presentation or data representation.

Understanding these definitions is crucial for air traffic controllers as they determine how to manage and respond to different aircraft situations in real-time. It ensures clarity and accuracy in communications and operational efficiency in managing air traffic.