Pitch/Roll Offset - Garmin G1000 Maintenance Manual

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Removed or replaced the GRS without loosening mounting rack bolts
Replaced the GRS and loosened mounting rack bolts
Replaced the GRS Configuration Module
Replaced the GMU (new serial number)
GMU was removed and reinstalled (same serial number)
Procedure A1: Pitch/Roll Offset Calibration
This procedure must be performed for both GRS units installed in the aircraft. This procedure
must be carried out with the engine off.
1. Level the aircraft (according to the aircraft manufacturer's instructions) to within ±0.25° of
zero pitch and zero roll.
2. Initiate the AHRS Ground Pitch/Roll Aircraft Level compensation mode by performing the
following steps:
a. Enter configuration mode and go to GRS/GMU CALIBRATION page as shown in Figure
7-7.
b. This page is protected and requires a keystroke password to perform the calibration.
Press the following softkeys in sequence:
1. Softkey 9
2. Softkey 10
3. Softkey 11
4. Softkey 12
G1000 System Maintenance Manual
190-00907-00
Table 7-1. GRS/GMU Calibration
Condition
Figure 7-7. Pitch/Roll Offset
Calibration
Procedure
Required
A1 B D
None Required
X X X
X X X
X
None Required
Page 7-17
Rev. B