The de Havilland DH.4 is a British two-seat biplane designed by Geoffrey de Havilland, first flown in 1916 and used extensively as a day bomber by British and, after the United States entered the war, American forces during the First World War. It was produced in very large numbers, particularly in the United States where it was license-built as the most numerous American-built aircraft of the war, and after the armistice many surplus DH.4s were converted for civilian use, including service flying some of the earliest United States Post Office airmail routes in the early 1920s.
Facts
SignificanceFirst British two-seat light day bomber capable of defending itself; the only American-made plane to see combat in World War I 1 Manufacturer or BuilderAirco (Aircraft Manufacturing Company), designed by Geoffrey de Havilland 1 Sources
1. Airco DH.4 (Wikipedia)
Design and development
During August 1916, the prototype DH.4 made its first flight, powered by a prototype 230 hp (172 kW) BHP engine.
Introduction
The Airco DH.4 is a British two-seat biplane day bomber of the First World War. It was designed by Geoffrey de Havilland (hence \DH\") for Airco."
Introduction, significance
It was the first British two-seat light day-bomber capable of defending itself.
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