Garmin G1000 Maintenance Manual page 50

Invalid Data Field
XPDR FAIL
TAS FAIL
AIRSPEED FAIL
ALTITUDE FAIL
VERT SPEED FAIL
OAT
and
TAS
Page 4-6
Revision C
Associated
LRU(s)
•
Check GTX 33 configuration settings for GIA1 and
GIA2.
•
Perform a SET>ACTV configuration reset on the GTX
GTX 33
Config page, and verify the aircraft registration is
present.
•
Replace the GTX 33.
•
Verify that there are no GDC configuration or manifest
errors in the ALERT window.
•
Inspect GDC 74A pitot/static plumbing integrity.
•
Inspect pitot/static ports and associated equipment for
faults.
•
For TAS failure, also check GTP 59 OAT probe as
GDC 74A
stated below.
•
Check GDC 74 configuration settings for the PFD,
MFD, GIA1, and GIA2.
If PFDs, MFD, and GIA configuration settings are
correct, replace the GDC configuration module.
If problem persists, replace the GDC 74A.
•
Check OAT probe wiring and connectors for faults.
•
Check GDC configuration module wiring for damage,
replace if any is found.
GTP 59
•
Replace GDC configuration module.
•
Replace GDC 74A with a known good unit:
If problem persists, replace the GTP 59.
G1000-Columbia 350/400 System Maintenance Manual
Solution
190-00577-03