TIS symbols have a track pointer which are not on TCAS/TAS symbols.
The track pointer shows the estimated ground track direction the traffic is
moving (in 45° increments) relative to your own aircraft.
PROXIMITY INTRUDER TRAFFIC
A filled white diamond indicates that the intruding aircraft has
reached the proximity traffic threshold as defined by the TIS
system, but is still not considered a threat. This intruder is
now 100 feet below your aircraft and flying level. The track
pointer on the diamond indicates the direction of the intruder's
ground track. Here the intruder is moving approximately 45° to your cur-
rent track or heading.
PROXIMITY INTRUDER NON-ALTITUDE REPORTING
An open white diamond indicates proximity traffic that is non-
altitude reporting. The symbol indicates that the intruder's
ground track is approximately 90° to your current track or
TRAFFIC ADVISORY (TA)
A symbol change to a filled yellow circle indicates that the
intruding aircraft is considered to be potentially hazardous.
Depending on your own altitude the system will display a TA
when time to Closest Point of Approach (CPA) is reached as
defined by the TIS system. Here the intruder is 100 feet above your air-
craft. The arrow indicates the intruder is descending at 500 feet per
minute or greater. The intruder is moving at approximately 180° to your
current track or heading
TRAFFIC ADVISORY NON-ALTITUDE REPORTING (NAR)
An open yellow circle indicates that the intruding aircraft is
considered to be potentially hazardous and is not reporting
altitude. Here the intruder is moving at approximately 225° to
your current track or heading.
TA traffic that is beyond the selected range will be displayed as half the
appropriate symbol at the edge of the display matching the bearing of
Rev 2 Nov/2002
KMD 550/850 Traffic Addendum