Garmin G1000 Cockpit Reference Guide for the Cessna Caravan 190-00748-02 Rev. B84annunciations & alertsFlightInstrumentsEISNav/Com/XPDR/AudioAFCSGPS NavFlightPlanningProceduresHazardAvoidanceAdditionalFeaturesAbnormalOperationAnnun/AlertsAppendixIndexgWx 68 alert messages (Cont.)Message CommentsMANIFEST – GWX softwaremismatch, communication halted.The GWX 68 has incorrect software installed.The system should be serviced.WX ALERT – Possible severeweather ahead.Possible severe weather detected within +/- 10degrees of the aircraft heading at a range of 80to 320 nm.gdC 74a message advisoriesMessage CommentsMANIFEST – GDC1 softwaremismatch, communication halted. The GDC 74A has incorrect software installed.The system should be serviced.MANIFEST – GDC2 softwaremismatch, communication halted.gmC 710 message advisoriesMessage CommentsGMC CONFIG – GMC Config error.Config service req’d.GMC 710 configuration settings do not matchthose of backup configuration memory. Thesystem should be serviced.GMC FAIL – GMC is inoperative. A failure has been detected in the GMC 710.The GMC 710 is unavailable.MANIFEST – GMC softwaremismatch. Communication halted.The GMC 710 has incorrect software installed.The system should be serviced.GMC KEYSTK – GMC [key name]Key is stuck.A key is stuck on the GMC 710 bezel. Attemptto free the stuck key by pressing it severaltimes. The system should be serviced if theproblem persists.