Playing Tennis On The Wing Of An Airplane

After the successful deployment of the JN-3, Curtiss produced a development, known as the JN-4, with orders from both the US Army and orders in December 1916 from the Royal Flying Corps for a training aircraft to be based in Canada.[N 1] The Canadian version, the JN-4 (Canadian), also known as the "Canuck", had some differences from the American version, including a lighter airframe, ailerons on both wings, a bigger and more rounded rudder, and differently shaped wings, stabilizer, and elevators. As many as 12 JN-4 aircraft were fitted with an aftermarket Sikorsky wing by the then-fledgling company in the late 1920s