Piper PA-38 Tomahawk airplane model. Design input for the Tomahawk came from a questionnaire Piper distributed randomly to 10,000 flight instructors during the 1970s. With their responses in mind, Piper developed the PA-38. The resulting aircraft featured a T-tail and NASA Whitcomb GA(W)-1 design low set wing of constant chord and thickness (also featured on the competing Beech Skipper), a cabin wider than the Cherokee's (and thus much wider than the Cessna 150/152's) with 360° vision and a Lycoming O-235 powerplant. Many parts, such as the main undercarriage wheels and elevators, were interchangeable.