Cockpit Reference Guide

Garmin G1000 Cockpit Reference Guide for the Hawker Beechcraft C90A/GT/GTi
190-00664-02 Rev. B 81
Annunciations & Alerts
Flight
Instruments
Nav/Com/
XPDR/Audio AFCS GPS Nav
Flight
Planning Procedures
Hazard
Avoidance
Additional
Features Annun/Alerts Appendix Index
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.
ADC1 Service – ADC1 needs
service. Return unit for repair
A failure has been detected in the GDC1 or
GDC2. The system should be serviced.
ADC2 Service – ADC2 needs
service. Return unit for repair
MANIFEST – GDC1 software
mismatch, communication halted.
The GDC 74B has incorrect software installed.
The system should be serviced.
MANIFEST – GDC2 software
mismatch, communication halted.
MANIFEST – ADC1 software
mismatch, communication halted.
The GDC1 and/or GDC2 self-test has detected
a problem in the unit. The system should be
serviced.
MANIFEST – ADC2 software
mismatch, communication halted.