The PC-12 is a stable and easy airplane to fly at any altitude or airspeed. Pilots transitioning out of high performance piston singles will find the indicated airspeeds and flying qualities to be not that much different, particularly with the new, lighter roll forces. The Vmo indicated airspeed limit is 240 knots, and that decreases with altitude. And, like other turboprop singles, the propeller provides loads of drag when the engine is in flight idle, so it's easy to come down at a high rate if the situation requires. The airplane is certified to 30,000 feet and achieves its lowest fuel flows at that altitude, but the cabin hits 8,000 feet when the airplane is at 25,000 feet, so many will find it most comfortable to fly in the mid-20s where you find a good compromise of fuel efficiency, speed and cabin comfort.