Garmin STC Service Bulletin 1876 Approval of GTN 6XX/7XX Software Version 6.51
Gamin has issued a Service Bulletin to update the software installed in GTN 6XX/7XX systems interfaced to a GDL 88 or GTX 345. This software update fixed an issue that caused the GTN 6XX/7XX (with software versions 6.00 through 6.50) to go blank for a few seconds when displaying NEXRAD from a GTX 345 (all product versions) or GDL 88 (all product versions) and fixed an issue that caused the GTN 6XX/7XX (with software versions 6.50 and earlier) map to not display newly received data (i.e., AIRMET, SIGMET, SCIT, TFRs, and Cyclones) from the GDL 88 (all product versions), GTX 345 (all product versions), GSR 56 (all product versions), or GDL 69 (all product versions). This Service Bulletin is mandatory for this configuration and is covered under warranty by Garmin. Please call or email LGM if there are any questions concerning this SB. Thanks.
See SB here:
For More Information:
877-227-9142 Ext 273