Diamond DA40

DA40 Diamond Star
Role	Light aircraft
Manufacturer	Diamond Aircraft Industries
First flight	5 November 1997
Unit cost	$420,000 DA-40XLT (2013 price)
Developed from	Diamond DA20

The Diamond DA40 Diamond Star is an Austrian four-seat, single engine, light aircraft constructed from composite materials. Built in both Austria and Canada, it was developed as a four-seat version of the earlier DA20 by Diamond Aircraft Industries.

Based on the success of the earlier DV20/DA20 two-seat aircraft, the company designed a four-seat variant, the DA40. The DA40 is a four-seat low-wing cantilever monoplane made from composite materials. It has a fixed tricycle landing gear and a T-tail. The Rotax 914-powered prototype DA40-V1, registered OE-VPC, first flew on the 5 November 1997 and was followed by a second prototype DA40-V2 (registered OE-VPE) which was powered by a Continental IO-240. In 1998 a third prototype DA40-V3 flew powered by a Lycoming IO-360 engine. Four more test aircraft were produced followed by the first production aircraft in 2000. JAR23 certification of the IO-360 production variant was obtained in October 2000. In 2002 the production of the Lycoming-engined variant was moved to Canada and the Austrian factory concentrated on diesel-engined variants.

The DA40 has officially appeared in only three versions, the DA 40, DA 40D and DA 40F, as documented on its type certificates. The various model names that the aircraft has been sold under are marketing names and are not officially recognized by the authorities that have certified the aircraft.

The DA40 was initially marketed as the DA40-180, powered by a fuel injected Textron Lycoming IO-360 M1A engine.

In late 2006, the XL and FP models replaced the DA40-180. The FP replaced the fixed pitch propeller version of the 180 and the XL replaced the constant speed propeller version. The major difference between the new models and the 180 is the higher maximum cruise speeds. The DA40-XL is approximately four knots faster than the preceding DA40-180/G1000 with the two-blade Hartzell propeller and the "Speed Gear" option. The XL's speed increase is mostly due to the Powerflow exhaust system.