Garmin G1000 Cockpit Reference Guide for the Socata TBM 850
190-00708-02 Rev. A
64
Abnormal Operation
Flight
InstrumentsEAS
Nav/Com/
XPDR/AudioAFCSGPS Nav
Flight
PlanningProcedures
Hazard
Avoidance
Additional
Features
Abnormal
Operation
Annun/
AlertsAppendixIndex
Dead Reckoning Indications
Symbolic Aircraft
(Map pages and Inset Map)
CDI ‘DR’ Indication on PFD
As a result of operating in DR Mode, all GPS-derived data is computed based upon
an estimated position and is displayed as yellow text on the display to denote degraded
navigation source information. This data includes the following:
Also, while the G1000 is in DR Mode, the autopilot will couple to GPS for up to 20
the accuracy of all nearest information (airports, airspaces, and waypoints) is
questionable. Finally, airspace alerts continue to function, but with degraded
accuracy.
