
Garmin G1000 Cockpit Reference Guide for the Piper PA32
12-15
SECTION 12 – ANNUNCIATIONS
& ALERTS
GRS 77 Message Advisories (Cont.)
Message Comments
GEO LIMITS
– AHRS1 too far North/
South, no magnetic compass.
The aircraft is outside geographical limits for approved AHRS operation. Heading
is flagged as invalid.
MANIFEST
– GRS1 software
mismatch. Communication halted.
The #1 AHRS has incorrect software installed. The G1000 system should be
serviced.
GMU 44 Message Advisories
Message Comments
HDG FAULT
– AHRS1 magnetometer
fault has occurred.
A fault has occurred in the #1 GMU 44. Heading is flagged as invalid. The AHRS
uses GPS for backup mode operation. The G1000 system should be serviced.
MANIFEST
– GMU1 software
mismatch. Communication halted.
The GMU 44 has incorrect software installed. The G1000 system should be
serviced.
GDL 69A Message Advisories
Message Comments
GDL69 CONFIG
– GDL 69
configuration error. Config service
req’d.
GDL 69 configuration settings do not match those of backup configuration
memory. The G1000 system should be serviced.
GDL69 FAIL
– GDL 69 has failed. A failure has been detected in the GDL 69. The receiver is unavailable. The
G1000 system should be serviced
MANIFEST
– GDL software mismatch.
Communication halted.
The GDL 69 has incorrect software installed. The G1000 system should be
serviced.
GDC 74A Message Advisories
Message Comments
ADC1 ALT EC
– ADC1 altitude error
correction is unavailable.
GDC1 is reporting that the altitude error correction is unavailable.
ADC1 AS EC
– ADC1 airspeed error
correction is unavailable.
GDC1 is reporting that the airspeed error correction is unavailable.
MANIFEST
– GDC1 software
mismatch. Communication halted.
The GDC 74A has incorrect software installed. The G1000 system should be
serviced.
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