Garmin International Inc finally granted the installation approval for all their newest “all in one” ADS-B transponder that can be equipped in helicopters. The Federal Aviation Administration (FAA) has granted Garmin with the Supplemental Type Certification which for the installation of both transponders. The GTX 345/335 transponders are the models Garmin has been successful in adding to the (FAA) Approved Model List (AML) which is of part of 27 helicopters. The GTX 345/355 models are both equipped with built- in Wide Area Augmentation System(WAAS). Read more >>