Cunningham-Hall PT-6
The Cunningham-Hall Model PT-6 was an American six-seat cabin biplane aircraft of the late 1920s and was the first design of the Cunningham-Hall Aircraft Corporation of Rochester, New York. == Development and design == The Cunningham-Hall Aircraft Corporation was formed in 1928 and the first design was the PT-6 (Personal Transport 6-place), which first flew on April 3, 1929.