[1] In 1974, Allen Paulson began to develop the Hustler, which was a corporate aircraft that featured a propeller in front for short runway use, and a jet in back for high-altitude cruising.

[2] American Jet Industries was to produce a seven-seat executive transport, powered by a Pratt & Whitney PT6 turboprop engine in the nose supplemented by a Williams Research Corporation WR19-3-1 turbofan mounted in the tail.

The turbofan, if certified, was to be a standby emergency power unit that could also be used if extra thrust was needed for take-off.

To enable the new engine to be fitted a 2 ft 8 in (0.81 m) extension to the forwards fuselage was implemented, allowing the cabin entrance door to be moved in front of the wing, and other aerodynamic changes were made.

The Hustler was a low-wing cantilever monoplane with retractable tricycle landing gear, and a high-mounted tailplane.