
190-00600-01 Rev. C
Garmin G1000 Cockpit Reference Guide for the Cessna Citation Mustang
70
Annunciations & Alerts
GDL 69A Message Advisories (Cont.)
Message Comments
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 74B Message Advisories
Message Comments
ADC1 ALT EC
– ADC1 altitude error
correction is unavailable.
GDC1 or GDC2 is reporting that the altitude
error correction is unavailable.
ADC2 ALT EC
– ADC2 altitude error
correction is unavailable.
ADC1 AS EC
– ADC1 airspeed error
correction is unavailable.
GDC1 or GDC2 is reporting that the airspeed
error correction is unavailable.
ADC2 AS EC
– ADC2 airspeed error
correction is unavailable.
MANIFEST
– GDC1 software
mismatch, communication halted.
The GDC 74B has incorrect software installed.
The G1000 system should be serviced.
MANIFEST
– GDC2 software
mismatch, communication halted.
GCU 475 Message Advisories
Message Comments
GCU CNFG
– GCU config error.
Config service req’d.
GCU 475 configuration settings do not match
those of backup configuration memory. The
G1000 system should be serviced.
GCU FAIL
– GCU is inoperative. A failure has been detected in the GCU 475.
The GCU 475 is unavailable.
MANIFEST
– GCU software
mismatch, communication halted.
The GCU 475 has incorrect software installed.
The G1000 system should be serviced.
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