BRISTOL MK. IV BOLINGBROKE

Development of the Blenheim began in 1935 as a development of a civil transport. When it first appeared the Blenheim was faster than most of the fighters then in use by the Royal Air Force, but by the outbreak of war in 1939 it was slow and nearly obsolete. Nevertheless it served extensively in the first three years of the war as a bomber, night-fighter, and reconnaissance aircraft. A version of the Blenheim Mk. IV was built in Canada by Fairchild called the Bolingbroke. These aircraft served primarily as coastal patrol planes and as trainers.