Odekirk co-designed the H - 4 Hercules ( commonly known as the Spruce Goose ) .
Many sources state that Odekirk was aboard when Hughes piloted the plane on its only flight on November 2 , 1947 .
Odekirk co-designed the H - 4 Hercules ( commonly known as the Spruce Goose ) and many sources state that Odekirk was aboard when Hughes piloted the plane on its only flight on November 2 , 1947 .