The Piper Cheyenne 400LS, PA-42-1000, is the final development and improvement of the venerable Cheyenne line of twin turboprop business aircraft. It is derived directly from the Cheyenne III series, but utilizes the far more powerful TPE331 engines with four-blade propellers which produce significantly faster airspeeds than its predecessors. The 400LS was initially designated the Cheyenne IV, and finally the 400. First flown in 1983, the Cheyenne 400 was in production through 1992 with approximately 44 aircraft entering service.
The Piper Cheyenne 400LS is a mid-sized, cabin-class, twin turboprop business aircraft configured as a cantilever low-wing monoplane with a T-tail.
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