Description

Track label filtering is an ATS system feature that (temporarily) hides the labels of tracks that are considered to be unconcerned to the controller. Note that while labels can be hidden (filtered), the track symbols themselves must be presented at all times as stipulated in ICAO Doc 4444. Also, as emergency transponder codes (7500/7600/7700) must be presented to the controller, the labels of these aircraft are not suppressed.