The first XB-47 (46-065) rolled out of the factory at Seattle on September 12, 1947. It was powered by six
3750 lb.s.t. General Electric J35-GE-7/9 turbojets. It was the first large American jet aircraft to feature a swept wing. The first flight of the XB-47 took place on December 17, 1947, with Bob Robbins and Scott Osler at the controls. Note that very few came to the ceremony, as Boeing regarded the aircraft as unimportant..

509th BW