Definition
A radar or surveillance track that has been flagged for closer monitoring because its behavior, identity, or location warrants additional attention from controllers or defense personnel. The track may be unidentified, off its expected route, behaving unusually, or entering sensitive airspace, and is watched until it is either resolved as routine or escalated for further action.
Plain English
An aircraft showing up on radar that someone has decided to watch more carefully because something about it doesn't quite add up or needs checking.
Context Anchor
Seen in air traffic control, air defense, and aviation security discussions when an aircraft is being identified or monitored.
Derivation
Track means the path or displayed movement of something being followed. Interest here means special attention, not curiosity. Together, the phrase means a target whose movement is being followed because it matters operationally.
Why Pilots Care
Helps maintain awareness of aircraft that may require special handling or pose a potential conflict.
Intuition Check
Do not read interest as casual curiosity. Here it means official attention because the aircraft may need to be identified, contacted, or controlled.
Example Sentence 1
After the small aircraft entered the restricted area without clearance, it was designated a Track Of Interest and monitored closely until it was identified.
Example Sentence 2
During the exercise, several tracks of interest were monitored on the radar display.