Bristol - for the Bristol Bi-plane, a plane used by Canadian WW1 pilots
The Bristol F.2 Fighter was a British two-seat biplane fighter and reconnaissance aircraft of the First World War flown by the Royal Flying Corps. It is often simply called the Bristol Fighter or popularly the "Brisfit" or "Biff". Despite being a two-seater, the F.2B proved to be an agile aircraft that was able to hold its own against opposing single-seat fighters. The Bristol's solid design ensured that it remained in military service into the 1930s, and surplus aircraft were popular in civil aviation.
In September and October 1917, orders for 1,600 Bristols were placed and by the end of the First World War, the Royal Air Force had 1,583 in operation. A total of 5,329 aircraft were eventually built, mostly by Bristol but also by Standard Motors, Armstrong Whitworth and even the Cunard Steamship Company. After the war, Bristols continued to operate, serving with the New Zealand Permanent Air Force and RAAF as well as with the air forces of Belgium, Canada, Ireland, Greece, Mexico, Norway, Peru, Spain and Sweden. It was not until 1932 that the F.2B was finally withdrawn from RAF service, the last Bristol unit being No. 20 Squadron RAF stationed in India. The type lasted a further three years in New Zealand service.
Andrew Edward McKeever DSO, MC & Bar, DFC (21 August 1894 – 25 December 1919) was a Canadian World War I two-seater flying ace who, in conjunction with his gunners, was credited with 31 victories. He was the highest scoring two seater fighter pilot in the Royal Flying Corps or Royal Air Force. He scored all 31 of his victories while flying the Britol fighter. Seven different gunners/observers shared his victories. One of these, Lieutenant Leslie Powell, became an ace in his own right, with 19 successes, 18 of which were in tandem with McKeever.
There are three airworthy Bristol Fighters (as of 2007) one of which (identity # D-7889) is at the Canada Aviation and Space Museum, in Rockcliffe, Ontario
Source: Wikipedia - http://en.wikipedia.org/wiki/Bristol_F.2_Fighter