The FAA has approved several alternate methods of compliance (AMOCs) for the airworthiness directive (AD) issued June 6 that affects certain NavWorx Inc. universal access transceivers (UATs). The UATs provide Automatic Dependent Surveillance-Broadcast (ADS-B) Out and In on 978 MHz. By Jan. 11, 2018, owners of aircraft with the affected UATs must disable the unit; upgrade the software, which makes the unit noncompliant with the FAA’s 2020 ADS-B Out mandate; or couple the UAT to an approved GPS position source.
Source: aopaPilots obtain NavWorx AMOCs