Fokker S.III

The Fokker S.III was a biplane trainer aircraft of the 1920s. It was of conventional configuration, seating the pilot and instructor in tandem, open cockpits. The single-baywings were staggered and of unequal span. In 1927, Fokker's US subsidiary, Atlantic Aircraft imported a single example, in an attempt to interest the US Army in the type, but this did not result in a sale. The aircraft was eventually purchased by the Wright Aeronautical Corporation and used as an engine testbed until broken up in 1929.

Summary from Wikipedia, photo via Wikimedia Commons, licensed under CC BY-SA.