Target CPoA

The minimum distance that should be achievable through controller intervention in a Compromised Separation event.

Target TFC

A n unmoderated indication of the traffic advice issued shat should have been issued to aircraft in a particular Compromised Separation event.

1 denotes that traffic should been issued to the first aircraft in the pair and that aircraft only;
2 denotes that traffic should been issued to the first aircraft in the pair and that aircraft only;
B denotes that traffic should have been issued to both aircraft;
E denotes that traffic should have been issued to at least one aircraft;
N denotes that no traffic need to have been issued.

Track Stretching

The act of increasing the distance an aircraft must fly to the runway. Usually done to delay to delay an aircraft, so its landing spacing behind the one it is following in the landing order is correct.

Transponder

An electronic device carried by aircraft that allows relevant aircraft data to be transmitted to a radar facility. It enables the ground system to identify a particular radar return as a specific aircraft, and it allows aircraft altitude information to be transferred for presentation to the Radar Controller.