Raytheon Aircraft teamed with AeroMech to develop an RVSM solution for most of the Beechcraft King Air fleet and has STCs for the King Air 200, 300 and 350 equipped with APS-65 or APS-80 autopilots and ADC-80 air-data computers.

Coupled with a previous OEM RVSM kit for the more recent King Air fleet with the ADC-85 air-data computers, the majority of Rockwell Collins-equipped King Air 200s, 300s and 350s now have a factory-sponsored RVSM solution available.

Read more here.