The Air Sedan was a 1929 design by the Buhl Aircraft Company of Marysville, Michigan. It carried six people including the pilot. Four were imported into Canada between 1929 and 1931. Compared to other aircraft of the time, it was not an outstanding aircraft. After the Buhl company went bankrupt, the Ontario Provincial Air Service obtainedc the rights to the aircraft and built 4 of the type in Sault Ste. Marie.
The Buhl was sometimes called a monoplane and a half since the top span was 40ft while the bottom was only 26ft 1in. A unique feature of the Buhl was that to avoid the weight of a battery powered engine starter it used a Coffman gas starter. The pilot inserted what looked like a shotgun shell in a breach near the throttle, closed and locked the breach then pulled the trigger. The explosive gases went through pipes and activated the cylinders hopefully starting the engine.