Airworthiness Directive · Amendment 39-21509 · Air collision avoidance system
Garmin International GMN-00962 GTS Processor Units
This AD applies to Garmin International GMN-00962 GTS processor units, part number 011-02571-0(), with software version 3.13 or earlier, except software version 3.12.1, installed on airplanes certificated in any category. These units are marketed as the GTS 825, GTS 855, or GTS 8000.
The FAA is adopting a new airworthiness directive (AD) for certain Garmin International (Garmin) GMN-00962 GTS processor units (GTS 825, GTS 855, GTS 8000). This AD was prompted by reports of GTS processor units issuing resolution advisories (RAs) when no risk of collision or loss of separation exists between the airplanes involved. This AD requires updating the software version of the affected GTS Processor units. The FAA is issuing this AD to address the unsafe condition on these products.
Within 24 months after the effective date of this AD, update the GTS processor software to a version that is not 3.13 or earlier, except 3.12.1. Software version 3.12.1 does not contain the unsafe condition.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Appliances and equipment
