Piper PA-31 CheyennePiper PA 31 Cheyenne airplane model. The Piper PA 31T Cheyenne is a turboprop development of the earlier PA 31P Pressurized Navajo. The Cheyenne series of business aircraft was one of the most successful Piper products. The development of the Cheyenne goes in the mid 1960s when Piper made a decision to redesign the Navajo to use turbines instead of piston engines. Mahogany wood. Scale: 1 32. Wingspan, 15. 75 inches. Length: 12. 75 inches