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Aviation Alerts and Advisories

GTN™ Xi Software Version 20.23


GTN Xi systems installed under the GTN 6XX/7XX Part 23 AML FAA STC SA02019SE-D are affected.




Optional: This STC Service Bulletin may be incorporated at the owner’s discretion.


STC Service Bulletin 22005 provides notification of the FAA STC SA02019SE-D Master Drawing List GTN 6XX/ 7XX Part 23 AML STC, Rev. 34 for the following:

GTN Xi Main Software Version 20.23

    • Fixed the roll steering issue identified in Garmin Service Advisory 21109. Roll steering is now provided for the autopilot to follow the Smart Glide™ route to the destination airport when Smart Glide is activated while in OBS mode.
    • Fixed an issue where tuning of NAV frequency was not allowed in G500, G600, G700 TXi (v3.30).
    • Added G3X and G5 as approved Smart Glide air data source.
    • Added GNX™ 375 as approved ADS-B Traffic/Weather source.

GTN Xi NAV Software Version 2.04 decreases the default NAV audio volume level.

ASDN Service Bulletin 22005 Rev A