COMPLIANCE: Mandatory

SYSTEM: GTX 23, GTX 33(D)(ES)(H), & GTX 330(D)(ES) not installed in a Garmin Integrated Flight Deck system (G1000, G1000H, G950, G900X, Cirrus Perspective™, and Embraer Prodigy® Integrated Flight Deck Systems)

PURPOSE:
This Service Bulletin incorporates new unit Software Version 7.04 for GTX 23, GTX 33(D)(ES)(H), & GTX 330(D)(ES) units. Software Version 7.04 incorporates the below functionality.

Ensures Flight ID changes are properly transmitted to ATC
Decreases the time needed to communicate small changes in the horizontal radius of containment.
Ensure proper function of devices connected to the GTX via RS-232