X-Plane 10.20 – Dewoitine D-510. The Dewoitine D.500 was an all-metal, open-cockpit, fixed-undercarriage monoplane fighter aircraft, used by the French Air Force in the 1930s. Introduced in 1936, the design was soon replaced by a new generation of fighter aircraft with enclosed cockpits and retractable undercarriage, including the 510’s successor, the Dewoitine D.520. The one presented here is an aircraft of GC1/8 based at Le Palestre. Credit goes to Bernard Augras for using his pilot. By Philippe Gastebois.