De Havilland Airco D.H.4

The Airco D.H.4 was a successful two-seat biplane day bomber and reconnaissance aircraft. It was designed by Geoffrey de Havilland for the British company Airco. This was a key aircraft for the Royal Flying Corps (RFC) during World War I. It was also the only American-built aircraft to see combat in the conflict. Its design allowed it to serve in military and civilian roles for many years after the war.