 170 Squadron RAF was a Second World War Royal Air Force squadron that operated the North American Mustang in the fighter-reconnaissance role and later the Avro Lancaster as part of Bomber Command.The squadron was formed at RAF Weston Zoyland on 15 June 1942 as a fighter-reconnaissance squadron equipped with the American-built North American Mustang I.After a few months' training with the Army it began operations over continental Europe in January 1943.