 It was flown to the Detroit Aircraft Show two days later, with minor alterations being made later including a switch from a tailskid to a tailwheel.The PT-6 was a cabin biplane with an all-metal structure that was stressed to meet military strength specifications rather than the much more lenient commercial requirements, however aside from the cabin, which was covered with corrugated aluminum, most of the airframe was fabric covered.It had a fixed landing gear with a tail wheel.