The Curtiss JN-4 "Jenny" is a series of biplane aircraft built by the Curtiss Aeroplane Company of Hammondsport, New York, later the Curtiss Aeroplane and Motor Company. The Curtiss JN series (the common nickname Jenny was derived from "JN") was produced as a training aircraft for the U.S. Army although the "Jenny" became the "backbone of American post-war aviation."
The "Jenny" is North America's most famous World War I aircraft. It was widely used during the war to train beginning pilots. The JN-4 was a twin-seat (student in front of instructor) dual control biplane. Its tractor prop and maneuverability made it ideal for initial pilot training with a 90 horsepower (67 kW) Curtiss OX-5 V8 engine giving a top speed of 75 miles per hour (121 km/h) and a service ceiling of 6,500 feet (2,000 m). The Curtiss factory in Buffalo, NY was the largest airplane factory in the world.
The British used the JN-4 (along with the Avro 504) for their primary World War I trainer; Canadian Aeroplanes Ltd. produced them in Canada. The Canadian version was the JN-4 (Can), also known as the "Canuck", and was built with a control stick instead of the Deperdussin control wheel used in the regular JN-4 model. Many Royal Flying Corps pilots earned their wings on the JN-4, both in Ontario and in Texas.
Most of the 6,813 built were unarmed, although some had machine guns and bomb racks for advanced training. None saw active service. After World War I, hundreds were sold on the civilian market, one to Charles Lindbergh as his first aircraft. The plane's slow speed and stability made it ideal for stunt flying and aerobatic displays in the barnstorming era between the world wars, with the nearly identical Standard J-1 aircraft often used alongside it. Some were still flying into the 1930s.
Source: Wikipedia, "Curtiss JN-4", available under the CC-BY-SA License.