In 1977 Mitsubishi embarked on the design of a new business jet known as the MU-300. This aircraft, subsequently called the 'Diamond', was a conventional low wing design with a T-tail and two P&W JT15D turbofans mounted on the rear fuselage. For a small jet, it had a large cabin for eight passengers, an aft lavatory and baggage. It received its Type Certificate on 6 November 1981. By late 1985 Mitsubishi had delivered 100 Diamonds from its San Angelo facility. At that time Mitsubishi sold the MU-300 package to Beechcraft where it became known as the Beechjet 400.
The Beechcraft Diamond 1A has a range of 1,142 nautical miles. Type in your city or airport identifier for a visual representation of the NBAA IFR Range (NM) for this aircraft.