The North American P-51 Mustang is the result of a direct request from the British Purchasing Commission to North American Aviation for a single seat, long-range fighter aircraft. First production models were used by the Royal Air Force for tactical reconnaissance and fighter-bombers during WWII. The North American P-51 Mustang is powered by an Allison engine of 1200 hp. The cruise speed at 75% is 202 knots. The empty weight is 6433 lb and the gross weight is 10,600 lb.