The Hawker 400 XP is a small jet aircraft. It equipped with two motors. Model designed for private owners. A number of transformations were made in this model in the segment of aerodynamic characteristics, mechanics, and interior. The latter was borrowed from the Hawker800XP airliner. It features wings with a supercritical profile, calculated using a computer program to reduce drag. Also it powered by Pratt & Whitney Canada JT15D engines. The original developer was Mitsubishi MU-300 Diamond. Then the rights were bought by the company Raytheon.