The document contains Minimum Operational Performance Standards for airborne equipment to support Automatic Dependent Surveillance ?C Broadcast utilizing the Universal Access Transceiver (UAT). UAT is a multi-purpose aeronautical data link intended to support not only ADS-B@ but also Flight Information Service ?C Broadcast (FIS-B)@ Traffic Information Service ?C Broadcast (TIS-B) and@ if required in the future@ supplementary ranging and positioning capabilities. The document was developed in parallel with DO-260B.