
Cirrus Perspective
™
by Garmin – Cockpit Reference Guide for the SR20/SR22/SR22T
190-00821-08 Rev. A 137
Annunciations & Alerts
Flight
Instruments EIS
Nav/Com/
XPDR/Audio AFCS GPS Nav
Flight
Planning Procedures
Hazard
Avoidance
Additional
Features
Abnormal
Operation
Annun/
Alerts Appendix Index
GDC 74A 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 74A has incorrect software installed.
The Perspective
™
system should be serviced.
MANIFEST
– GDC2 software
mismatch, communication halted.
ADC1 SERVICE
– ADC1 needs
service. Return unit for repair
The GDC1 and/or GDC2 self-test has detected
a problem in the unit. The Perspective
™
system
should be serviced
ADC2 SERVICE
– ADC1 needs
service. Return unit for repair
GDL 90 MESSAGE ADVISORIES
Message Comments
GDL90 CONFIG
– GDL 90 config
error. Config service req’d.
GDL 90 configuration settings do not match
those of backup configuration memory. The
Perspective
™
system should be serviced.
GDL90 FAIL
– GDL 90 has failed. A failure has been detected in the GDL 90. The
receiver is unavailable. The Perspective
™
system
should be serviced
MANIFEST
– GDL software
mismatch, communication halted.
The GDL 90 has incorrect software installed.
The Perspective
™
system should be serviced.
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