Garmin G1000 Cockpit Reference Guide for the Beechcraft A36/G36
190-00525-03 Rev. A
56
Abnormal Operation
Flight
InstrumentsEIS
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:
• NavigationStatusBoxeldsexceptActiveLeg,TAS,andDTK
• GPSBearingPointer
• WinddataandpointersintheWindDataBoxonthePFD
• CurrentTrackIndicator
• AllBearingPointerDistances
• ActiveFlightPlandistances,bearings,andETEvalues
Also, while the G1000 is in DR Mode, the autopilot will couple to GPS for up to 20
minutes. TAWS are also disabled. Additionally, 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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