Manufacturer of single engine aircraft, for general aviation applications. Diamond''s manufacturing facilities are located in London, Ontario, where it produces the DA20-C1 two-seat aircraft, the DA40 CS and DA40 XLS four-seat, single-engine aircraft; and assembles the DA42 L360 twin-engine aircraft. The Diamond D-JET program also is based at the company''s London, Ontario location. Company headquarers is at Wiener-Neustadt, Austria, where the company also produces aircraft.