190-00820-11 Rev. A
Pilot’s Guide for the Cirrus SR2x with Cirrus Perspective by Garmin
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HAZARD AVOIDANCE
SY
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FLIGHT
INSTRUMENTS
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AUDIO P
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HAZARD
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AFCS
ADDITIONAL
FEA
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APPENDICES
INDEX
6.9 GARMIN GTS 800 TRAFFIC
WARNING:
Do not rely solely upon the display of traffic information for collision avoidance maneuvering.
The traffic display does not provide collision avoidance resolution advisories and does not under any
circumstances or conditions relieve the pilot’s responsibility to see and avoid other aircraft.
WARNING:
Do not rely solely upon the display of traffic information to accurately depict all of the traffic
within range of the aircraft. Due to lack of equipment, poor signal reception, and/or inaccurate information
from aircraft or ground stations, traffic may be present that is not represented on the display.
NOTE:
Pilots should be aware of TAS system limitations. TAS systems require transponders of other aircraft
to respond to system interrogations. If the transponders do not respond to interrogations due to phenomena
such as antenna shading or marginal transponder performance, traffic may be displayed intermittently, or
not at all. Aircraft without altitude reporting capability are shown without altitude separation data or climb
descent indication. Pilots should remain vigilant for traffic at all times.
The optional Garmin GTS 800 is a Traffic Advisory System (TAS). The system enhances flight crew situational
awareness by displaying traffic information for detected transponder-equipped aircraft. The system also provides
visual annunciations and voice traffic alerts to assist the pilot in visually acquiring traffic.
The GTS 800 is capable of tracking a total of 45 intruding aircraft equipped with Mode A, C, or S transponders.
The system
can display a maximum of 30 aircraft with the highest threat potential simultaneously.
THEORY OF OPERATION
When the system is in Operating Mode, the TAS unit interrogates the transponders of intruding aircraft while
monitoring transponder replies. The system uses this information to derive the distance, relative bearing, and
if reported, the altitude and vertical trend for each aircraft within its surveillance range.
The system then calculates a closure rate to each intruder based on the projected Closest Point of Approach
(CPA). If the closure rate meets the threat criteria for a Traffic Advisory (TA), visual and voice alerting is
provided.
TAS SURVEILLANCE VOLUME AND SYMBOLOGY
The GTS 800 TAS monitors the airspace within ±10,000 feet of own altitude, and up to 22w nm in the
forward direction. TAS range is somewhat reduced to the sides and aft of own aircraft due to the directional
interrogation signal patterns. The system displays TAS-detected traffic using the symbology shown in Table
6-28.
In addition, if a 1090 MHz extended squitter transponder is installed, and the GTS 800 detects airborne
traffic providing 1090 MHz Automatic Dependent Surveillance - Broadcast (ADS-B) information, the system
will display the TAS traffic using the ADS-B symbology shown in Table 6-29.
