Garmin G1000 Manual page 77

4. When the operator has completed the engine run-up and the engine is back to an idle setting,
press the ENT key to indicate that the process is complete. When this is done, the TEST
COMPLETE field stops blinking.
5. The PFD informs the operator if the installation has passed or failed the vibration test. If the test
fails, the specific measurements causing the failure are identified and numeric values are displayed on
the PFD.
6. Press the ENT key on the PFD to conclude this procedure.
If failures are indicated, the engine run-up test may be repeated at most twice. If the test
does not pass after three attempts, then the installation should not be considered reliable
until the source of the vibration problem is identified and remedied. In the event of
repeated failure of the engine run-up test, record the values that are reported to be out of
range for future reference.
The following are potential causes for failure of the engine run-up test:
a) Vibration motion of GRS 77 and/or GMU 44 caused by neighboring equipment and/or
supports.
b) Mounting screws and other hardware for GRS 77 and/or GMU 44 not firmly attached.
c) GRS 77 connector not firmly attached to unit.
d) Cabling leading to GRS 77 or GMU 44 not firmly secured to supporting structure.
e) An engine / propeller that is significantly out of balance.
The aircraft can now be taxied back and the engine can be shut down for final testing. Restart both
displays in normal mode to conduct autopilot, optional system and final system checks. Following a
successful AHRS calibration, when the PFD powers up in normal mode, the AHRS attitude and heading
information displayed should become valid within 1 minute of power-up.
G1000 V8.XX S/W Load and Post Install Checkout – Columbia 350/400
190-00577-04
NOTE
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Revision 1