GFC 600 AFCS Part 23 AML STC Maintenance Manual Page 52
190-01938-00 Revision 13
8.4.1 Data Log Download
1. Connect a USB flash drive with at least 3GB of free space to the GMC 605 using the
Garmin USB cable.
2. Start the GMC 605 in configuration mode.
3. Navigate to the SYS -> DATALOGS page.
4. Select the DOWNLOAD field and press the VS key.
5. After the download completes, a summary page will be displayed. Press the HDG
button to continue.
6. The unit will restart in normal mode.
8.4.2 Assert Log Download
1. Connect a USB flash drive with at least 3GB of free space to the GMC 605 using the
Garmin USB cable.
2. Start the GMC 605 in configuration mode.
3. Navigate to the SYS -> ASSERTS page.
4. Select the DOWNLOAD ASSERTS field and press the VS key.
5. After the download completes, a summary page will be displayed. Press the HDG
button to continue.
6. The unit will restart in normal mode.
9. GFC 600 Return to Service Procedure
The following sections will verify the proper operation of the GFC 600 AFCS after maintenance
has been performed on the system. Operational information regarding the GFC 600 AFCS can
be found in the GFC 600 Pilot’s Guide, p/n 190-01488-00.
9.1 Pitot and Static System Leak Check
If an Air Data Module (ADM) is installed in the system and is not being used as a Cabin
Pressure sensor or if the pitot and/or static system were opened during maintenance, a pitot
and static system leak check must be performed. Refer to the aircraft maintenance manual for
pitot and static system leak test instructions.
NOTE: Disable any ADS-B Transmitting equipment for this test to avoid interference with air
traffic control.
9.2 Configuration Mode Tests
Perform the following tests if the configuration module (or ADM) is replaced, or when the GMC
605 rack is removed or loosened.
9.2.1 Pitch/Roll Offset Calibration
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