This week in Edwards history Published May 24, 2018 By 412th Test Wing Public Affairs EDWARDS AIR FORCE BASE, Calif. -- On May 26, 1950, the Douglas XA2D-1 Skyshark, an experimental turboprop-powered version of the company’s AD-1 Skyraider, made its first flight, flown by George Jansen. The aircraft’s turboprop engine transmitted power to two large counterrotating three-bladed propellers through a complicated gearbox.