GFC 600 systems installed under the GFC 600 Part 23 AML STC SA01844WI are affected.
Mandatory for GFC 600 systems installed under STC SA01844WI that interface to a GDU 620 and dual GTN/GNS products.
Mandatory for GFC 600 systems installed under STC SA01844WI in Textron Aviation 36/A36/A36TC aircraft.
For all other installations this bulletin is optional and may be incorporated at the owner’s discretion.
GMC 605 software version 2.11 includes support for the GFC 600 interface to the G500/600 TXi system and addresses Garmin Service Advisory 1805 (NAV 2).