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LMM for the Kodiak 100 Page 4-11
190-02102-00 Rev.4
4.4 System Messages
New Terrain/Obstacle cards, Jeppesen Aviation Database and other
optional features (i.e. TAWS unlock card) will need to be replaced if the
master configuration module is changed. The System ID number will
change to a new number when installing a new master configuration mod-
ule. The old Terrain and other cards will no longer work as they will remain
locked to the old System ID number.
Table 4-1 lists maintenance related system messages, possible causes, and recom-
mended actions.
Table 4-1. Troubleshooting System Messages
System Message Description
Possibly Faulty
LRU / Subsystem
ADC1 ALT EC ADC1 altitude error correction is
unavailable.
• GDC 72
ADC1 AS EC ADC1 airspeed error correction is
unavailable.
• GDC 72
ADC1 SERVICE A failure has been detected in
ADC1.
• GDC 72
AHRS MAG DB The AHRS1 magnetic model
database versions do not match.
• GRS 79
AHRS1 CAL AHRS1 calibration error. • GRS 79
AHRS1 CONFIG AHRS1 configuration error. • GRS 79
• Master Config
Module
AHRS1 GPS AHRS1 is using the backup GPS
data path.
• GRS 79
• GIA 64W
AHRS1 GPS AHRS1 is not receiving any GPS
information.
• GRS 79
• GIA 64W
AHRS1 GPS AHRS1 is not receiving backup
GPS information.
• GRS 79
• GIA 64W
AHRS1 GPS AHRS1 is operating exclusively in
no-GPS mode.
• GRS 79
• GIA 64W
AHRS1 SERVICE A failure has been detected in
AHRS1.
• GRS 79
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