GFC 600 AFCS Part 23 AML STC Maintenance Manual Page 53
190-01938-00 Revision 13
NOTE: Level the aircraft in accordance with the manufacturer’s aircraft maintenance manual
prior to applying external electrical power to the aircraft, existing avionics systems, and GFC
600 AFCS and starting the Pitch/Roll offset calibration test.
NOTE: Use the NOSE UP/DN thumbwheel on the GMC 605 to scroll up and down through the
page selections. Use the IAS and VS buttons on the GMC 605 to move the cursor left or right,
respectively. The VS button is also used to accept the desired selections.
NOTE: To exit configuration mode, cycle power to the GFC 600 system.
1. Start the GMC 605 in configuration mode by pressing and holding the FD button while
applying power to the system. Press the HDG button when CONT is displayed on the
GMC 605.
2. Navigate to the GFC -> CALIBRATE -> PITCH/ROLL page.
3. Scroll through each of the pitch/roll calibration pages, following the instructions on each
page to ensure that the system is ready for calibration.
4. Select BEGIN CALIBRATION to start the calibration process.
5. When the test is complete, select QUIT to return to the GFC -> CALIBRATE ->
PITCH/ROLL page.
NOTE: STATUS -> TEST IN PROGRESS will be displayed while the pitch and roll offset is
being calibrated.
NOTE: Select QUIT to quit the calibration process if necessary.
NOTE: TEST COMPLETE: SUCCESS will be displayed if the process completes successfully.
NOTE: TEST COMPLETE: FAILURE will be displayed if the process does not complete
successfully. Refer to Section 5.1 for troubleshooting tips.
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