Lynx
®
NGT-9000
Pilot’s Guide 2-31
Operation - Panel Mount
Traffic Advisory System (TAS)
TAS is an active system that interrogates transponders (aircraft
to aircraft) in the surrounding airspace similar to ground based
radar. When replies to these active interrogations are received, the
responding aircraft’s range, altitude, and closure rates are computed
to plot trafc location and predict collision threats. The NGT-9000+ or
NGT-9000R+ alerts the ight crew to nearby transponder equipped
aircraft and assists the pilot in the visual acquisition of aircraft that
may represent a danger. Table 2-3 summarizes the criteria necessary
to display a trafc advisory. Figure 2-12 shows the TAS Trafc Zone
Graphic.
• Trafc information, out to a selected range, is graphically displayed
on the NGT-9000+ or alternate display.
• The system display shows the relative position of trafc using text,
shapes (i.e., Trafc Advisory = solid circle; Other Trafc = open
diamond, Proximate Trafc = solid diamond) and colors.
• The effective active-mode surveillance range is 35 nmi and
track 35 ATCRBS intruders simultaneously with the other aircraft
bearing relative to the nose of own aircraft.
• The tracking of other aircraft is in a cylindrical volume centered
on own aircraft with a maximum radius of 35 nmi and extending
10,000 ft above and 10,000 ft below own aircraft.
• A TA symbol remains on the screen for at least 8 seconds, even if
the intruder aircraft no longer meets the TA criteria, as long as the
Lynx NGT-9000 continues to track the aircraft.
• The system uses an audio output that announces Trafc Advisory
and relative bearing, relative altitude and range.
• A discrete output (trafc alert lamp) may be used to indicate a
trafc advisory (TA) has been detected.
• All other aircraft that may be displayed that do not meet the criteria
of a TA or PA are classied as Other Trafc (OT).
• An audio output is used to announce the Trafc Advisory (TA).
Options may be set for extended callouts for relative bearing,
relative altitude and range.
• A discrete output (trafc alert lamp) may be used to indicate a
Trafc Advisory (TA).