Garmin G1000 NAV III Line Maintenance Manual page 225

B.1.5.3 GDC 74A Air Data Computer Software (GDU software version 6.01 and earlier)
Any pitot/static covers must be removed in order to successfully execute the SW and/or
configuration loading to the GDC 74A.
1. Highlight the GDC74 file. Ensure that GDC to GIA data path appears in the LRU field as shown:
2. Press the LOAD softkey.
3. Select YES and press the ENT key to acknowledge the following prompt:
4. The software for the GDC 74A Air Data Computer begins to load. Monitor the upload status as it
progresses:
5. After the files finish loading, press the ENT key to acknowledge the following prompt:
6. Check the SUMMARY field to ensure the load is 'COMPLETE'.
G1000 Nav III Line Maintenance Manual
190-00352-00
NOTE
Page B-11
Rev. L