Cheyenne owners now have an option for RVSM certification, in the form of a Jettech kit available for all Cheyenne 400LS models equipped with the Collins APS-65 or King KFC 400 autopilot. The company is working on an STC for those equipped with a KFC 300. It will sell for $159,000 and include a new air data computer, digital altimeter and associated pitot-static and wiring upgrades.