Garmin G1000 Pilot’s Guide for the Socata TBM 850/900 190-00709-05 Rev. D472HAZARD AVOIDANCETIS ALERTSWhen the number of TAs on the Traffic Map Page increases from one scan to the next, the following occur:• A single “Traffic” voice alert is generated.• A ‘TRAFFIC’ Annunciation appears to the top left of the Attitude Indicator on the PFD, flashing for 5 secondsand remaining displayed until no TAs are detected in the area.• The PFD Inset Map is automatically displayed with traffic.To reduce the number of nuisance alerts due to proximate aircraft, the “Traffic” voice alert is generated onlywhen the number of TAs increases. For example, when the first TA is displayed, a voice and visual annunciationare generated. As long as a single TA remains on the display, no additional voice alerts are generated. If a secondTA appears on the display or if the number of TAs initially decreases and then subsequently increases, anothervoice alert is generated.Figure 6-168 Traffic Annunciation (PFD)Inset MapDisplays WhenTA is DetectedA “TIS Not Available” (TNA) voice alert is generated when the TIS service becomes unavailable or is out ofrange. TIS may be unavailable in the radar coverage area due to the following:• Radar site TIS Mode S sensor is not operational or is out of service• Traffic or requesting aircraft is beyond the maximum range of the TIS-capable Mode S radar site.• Traffic or requesting aircraft is above the radar site in the cone of silence and out of range of an adjacent site.• Traffic or requesting aircraft is below radar coverage. In flat terrain, the coverage extends from about 3000feet upward at 55 miles. Terrain and obstacles around the radar site can further decrease radar coverage in alldirections.• Traffic does not have an operating transponder.The “TIS Not Available” (TNA) voice alert can be manually muted to reduce nuisance alerting. TNA mutingstatus is shown in the upper left corner of the Traffic Map Page.
