The D-3801 is a Swiss-built single-seat, single-engine fighter aircraft of the 1940s. It is a variant of the M.S.406 by French aircraft company Morane-Saulnier. 207 were built and delivered to the Swiss Air Force between 1941 and 1945.

The D-3801 measures 26 feet, 10 inches, has a wingspan of 34 feet, 10 inches, and uses a conventional undercarriage with retractable main landing gear. It is powered by a Hispano-Suiza 12Y51 inline piston engine that produces up to 1,050 horsepower and drives a three-blade propeller. The aircraft has a range of 746 miles, a top speed of 332 miles per hour, and can climb at 3,300 feet per minute up to a maximum altitude of 31,000 feet above sea level.

One of the Second World War’s lesser-known fighters, the D-3801 is beautiful in form and a thunderous performer. Whether recreating low-level attack runs, or soaring through the tops of high clouds, this classic machine will keep pilots of all skill levels coming back for more cockpit time.