
Cirrus Perspective
™
by Garmin – Cockpit Reference Guide for the SR20/SR22/SR22T
190-00821-09 Rev. A
142
Annunciations & Alerts
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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
MANIFEST
– ADC1 needs service.
Return unit for repair
The GDC1 and/or GDC2 self-test has detected
a problem in the unit. The system should be
serviced
MANIFEST
– ADC2 needs service.
Return unit for repair
GSR 56 MESSAGE ADVISORIES
Message Comments
GSR1 FAIL
– GSR1 has failed. A failure has been detected in the #1 GSR 56.
The system should be serviced.
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