190-00870-00 Rev. B
Garmin G950 Pilot’s Guide for the Pilatus PC-6
323
HAZARD AVOIDANCE
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE
AFCS
ADDITIONAL
FEATURES
APPENDICES INDEX
TIS ALERTS
When the number of TAs on the Traffic Map Page increases from one scan to the next, the following occur:
•Asingle“Traffic” voice alert is generated.
•A‘TRAFFIC’AnnunciationappearstothetopleftoftheAttitudeIndicatoronthePFD,ashingfor5seconds
and remaining displayed until no TAs are detected in the area.
•ThePFDInsetMapisautomaticallydisplayedwithtrafc.
To reduce the number of nuisance alerts due to proximate aircraft, the “Traffic” voice alert is generated only
when the number of TAs increases. For example, when the first TA is displayed, a voice and visual annunciation
are generated. As long as a single TA remains on the display, no additional voice alerts are generated. If a second
TA appears on the display or if the number of TAs initially decreases and then subsequently increases, another
voice alert is generated.
Figure 6-55 Traffic Annunciation (PFD)
Inset Map
Displays When
TA is Detected
A “TIS Not Available” (TNA) voice alert is generated when the TIS service becomes unavailable or is out of
range. TIS may be unavailable in the radar coverage area due to the following:
•RadarsiteTISModeSsensorisnotoperationalorisoutofservice
•TrafcorrequestingaircraftisbeyondthemaximumrangeoftheTIS-capableModeSradarsite.
•Trafcorrequestingaircraftisabovetheradarsiteintheconeofsilenceandoutofrangeofanadjacentsite.
•Trafcorrequestingaircraftisbelowradarcoverage.Inatterrain,thecoverageextendsfromabout3000
feet upward at 55 miles. Terrain and obstacles around the radar site can further decrease radar coverage in all
directions.
•Trafcdoesnothaveanoperatingtransponder.
The “TIS Not Available” (TNA) voice alert can be manually muted to reduce nuisance alerting. TNA muting
status is shown in the upper left corner of the Traffic Map Page.
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