Suspected Autopilot Malfunction - Garmin G1000 Reference Manual

Abnormal Operation
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:
• Navigation Status Box fields except Active Leg, TAS, and DTK
• GPS Bearing Pointer
• Wind data and pointers in the Wind Data Box on the PFD
• Current Track Indicator
• All Bearing Pointer Distances
• Active Flight Plan distances, bearings, and ETE values
Also, while the G1000 is in DR Mode, the autopilot will couple to GPS for up to 20
minutes. TAWS is 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.

SUSPECTED AUTOPILOT MALFUNCTION

NOTE: Consult the aircraft documentation for the location of circuit breakers
as well as specifics that may supplement or amplify this procedure.
If an autopilot failure or trim failure is suspected to have occurred, perform the
following steps:
1) Firmly grasp the control wheel.
2) Press and hold the AP DISC Switch. The autopilot will disconnect and
power is removed from the trim motor. Power is also removed from all
primary servo motors and engaged solenoids. Note the visual and aural
alerting indicating autopilot disconnect.
92
Garmin G1000 Cockpit Reference Guide for the Piper PA-46 Meridian
Dead Reckoning Indications
Symbolic Aircraft
(Map pages and Inset Map)
190-01842-00 Rev. A