190-00709-05 Rev. D Garmin G1000 Pilot’s Guide for the Socata TBM 850/90021SYSTEM OVERVIEWG1000 SYSTEM ANNUNCIATIONSNOTE: For a detailed description of all annunciations and alerts, refer to Appendix A. Refer to the AirplaneFlight Manual (AFM) for additional information regarding pilot responses to these annunciations.When an LRU or an LRU function fails, a large red ‘X’ is typically displayed on windows associated withthe failed data (Figure 1-14 displays all possible flags and responsible LRUs). Upon G1000 power-up, certainwindows remain invalid as equipment begins to initialize. All windows should be operational within oneminute of power-up. If any window remains flagged, the G1000 System should be serviced by a Garmin-authorized repair facility.Figure 1-14 G1000 System Failure AnnunciationsGDC 74B AirData ComputerGTX 33/D TransponderOrGIA 63W IntegratedAvionics UnitsGDC 74B AirData ComputerGEA 71 EngineAirframe UnitOrGIA 63WIntegratedAvionics UnitGIA 63W IntegratedAvionics UnitsGRS 77 AHRSOrGMU 44MagnetometerGIA 63W IntegratedAvionics UnitsGIA 63W IntegratedAvionics Units