Initially the major wartime contract to manufacture Avro Lancaster heavy bombers was to go to the National Steel Car Ltd. headquartered in Hamilton, utilizing the Malton factory (near today's Toronto Pearson International Airport).Questions arising as to the company's ability to manage the project led to the government's expropriation of the plant on 4 November 1942 and the setting up of the Crown Corporation, Victory Aircraft Limited, incorporated under the Department of Munitions and Supply Act, 1940 c.31.Differences between the British Lancasters and the Canadian built versions (known as the Mk X) revolved around engines, instruments and radio equipment being manufactured in Canada or the United States instead of England.Initially, all components were built at Malton except for the bomb doors, flaps, ailerons and elevators, that were produced by Ottawa Car & Aircraft Ltd. Later, more of the parts were subcontracted out with Canadian General Electric Co. Ltd. of Toronto constructing the fuel tanks, tailplane, fins and rudders, while the outer wings were subcontracted to the Fleet Aircraft Limited plant in Fort Erie, Ontario.Named the "Ruhr Express," much publicity was made of its christening, first flight and its departure (albeit delayed as the prototype was wheeled out missing some of its essential gear and was barely able to fly) to England.