Garmin TBM850 GPS Receiver User Manual


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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.
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