North American F-107North American F 107 airplane model. The F 107A was originally designed as a tactical fighter bomber version of the F 100, with a recessed weapon bay under the fuselage. However, extensive design changes resulted in its redesignation from F 100B to F 107A before the first prototype flew. Special features included an all moving vertical fin, a control system which permitted the plane to roll at supersonic speeds, and a system (Variable Area Inlet Duct)