G1000 Supplemental Maintenance Manual
Page 7-39
Textron Nav III Series
Revision 3
190-02128-04
Procedure D: Engine Run-Up Vibration Procedure
NOTES
On the calibration pages, “GRS” refers to whatever GRS or GSU unit is
installed.
Calibration Procedure D is performed in order to guarantee that the
ADAHRS/AHRS mounting is sufficiently rigid and insensitive to vibration. This
procedure must be performed for both GSU/GRS units installed in the aircraft.
Calibration Procedures A1 and B (Sections 7.10.1 and 7.10.3 respectively) are
not required prior to this procedure.
Figure 7-6, GRS/GMU Calibration, Engine Run-Up
1. Restart the PFD in configuration mode.
2. Use the FMS small knob to highlight GRS 1 for calibration and press the ENT key. The
SELECT PROCEDURE field is not blinking.
3. Initiate the AHRS engine run-up vibration test procedure by performing the following
steps:
a) Select the ENGINE RUN-UP TEST procedure and press the ENT key.
b) Follow the checklist items displayed on the PFD, and press the ENT key as each one is
completed or confirmed. When the CALIBRATE field is blinking, press the ENT key to
begin the procedure.
4. The PFD display instructs the operator to gradually increase power from idle to full
throttle and back to idle over a period of 1-2 minutes.
5. 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.
Summary of Contents for G1000 NXi
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