De Havilland Mosquito B Mk VII
The Mosquito B Mk VII was the first model of the aircraft to be produced in Canada. De Havilland had opened a subsidiary in Canada in 1928, with a factory at Downsview, near Toronto. Thus de Havilland were able to use their own production facilities to produce the Mosquito. In contrast most other British aircraft built in Canada were produced under license by Canadian firms.
The B Mk VII was essentially the same as the B Mk IV, but powered by Packard Merlin engines, produced under license in the United States. The B Mk IV used 1,390hp Merlin 31s. Twenty five B Mk VIIs were produced, with the first production aircraft flying on 24 September 1942. Canadian production then continued with the B Mk XX.