(2011) Service Advisory 1137 Rev A: GTN 625/GTN 635/GTN 650/GTN 725/GTN 750 Units Installed with Dual GTX 32 Transponders

AFFECTED PRODUCTS

GTN 6XX/7XX Units with Main Software Version 2.00 installed with dual GTX 32 transponders.

DESCRIPTION

When the GTN 6XX/7XX unit is installed with dual GTX 32 transponders the GTN will erroneously display the following message: 

“TRANSPONDER – Transponder 1 and 2 Mode S addresses do not match”

This message does not affect the operation of the GTN 6XX/7XX or the GTX 32 transponders.

In dual GTX 33 Mode S transponder installations (the GTX 32 is a mode C transponder) the above message is designed to appear if the Mode S addresses entered for each transponder during configuration do not match.

RESOLUTION

Garmin plans to correct this issue in a later software version.