Garmin GTN 6 Series Maintenance Manual page 74

6.12 Enabled Features ...........................................................................................................................6-25
6.13 HTerrain/HTAWS System Checks (For Units with HTerrain/HTAWS Only) ............................6-26
This section provides return to service procedures to be followed after removal and replacement of
equipment comprising part of or interfaced to the GTN 6XX/7XX. After conducting all of the required
return to service procedures in accordance with this section, the craft may be returned to service.
190-01007-B1 GTN 6XX/7XX Part 27 AML STC Maintenance Manual
Rev. 4 Page 6-2