Question: PlaneSense is a fractional aircraft ownership program managed by PlaneSense, Inc. and based in Portsmouth, New Hampshire, as of the beginning of 2016, they manage a civilian fleet of 36 total program aircraft, made up of thirty-four Pilatus PC-12 aircraft, a a single-engine turboprop passenger and cargo aircraft, manufactured by which organization?
Sentence (from "Pilatus PC-12"): The United States Air Force's designation is the U-28A.
Relevant evidence: No