190-00709-05 Rev. D Garmin G1000 Pilot’s Guide for the Socata TBM 850/900461HAZARD AVOIDANCESYSTEM STATUSDuring G1000 power-up, TAWS-B conducts a system test of its alerting capabilities. The system test can alsobe manually initiated. A voice alert occurs at test completion. TAWS-B System Testing is disabled when groundspeed exceeds 30 knots.Alert Type PFD/MFD* AlertAnnunciationTAWS-B PageCenter BannerAnnunciationVoice AlertSystem Test in Progress TAWS TEST NoneSystem Test Pass None None “TAWS System Test OK”TAWS System Test Fail TAWS FAIL “TAWS System Failure”* Annunciation is displayed on the MFD when terrain display is enabled.Table 6-23 TAWS-B System Test Status AnnunciationsManually testing the TAWS-B System:1) Select the TAWS-B Page.2) Press the MENU Key.3) Select 'Test TAWS System' and press the ENT Key to confirm the selection.Figure 6-157 TAWS-B Page MenuTAWS-B continually monitors several system-critical items such as database validity, hardware status, andGPS status. If the terrain/obstacle database is not available, the voice alert “TAWS System Failure” occurs withthe ‘TAWS FAIL’ alert annunciation.TAWS-B requires a 3-D GPS navigation solution along with specific vertical accuracy minimums. Should thenavigation solution become degraded or if the aircraft is out of the database coverage area, the annunciation‘TAWS N/A’ is generated in the annunciation window and on the TAWS-B Page, and the voice “TAWS NotAvailable” occurs. When sufficient GPS signal is returns and the aircraft is within the database coverage area,the voice alert “TAWS Available” is generated.
