CGS Hawk

Designer Chuck Slusarczyk established himself as a hang glider designer in the early 1970s, including producing engine power units for hang gliders. In October 1979, his company, Chuck's Glider Supplies was renamed CGS Aviation. In 1980 Slusarczyk surveyed pilots at Sun 'n Fun and AirVenture to find out what they wanted in a new ultralight aircraft design. The survey revealed pilots were looking for: • an enclosed cockpit with removable doors • three axis controls • flaps and not flaperons • struts in place of cable-bracing • the choice of tricycle gear, with a steerable nose wheel or conventional landing gear, with a steerable tail wheel • pusher configuration When the resulting Hawk first flew in January 1982 it was the first ultralight aircraft with an enclosed cockpit and to use strut bracing. The aircraft was intended to meet the requirements of the US FAR 103 Ultralight Vehicles category, including that category's maximum empty weight. The Hawks are available as aircraft kits, quick-build kits, or completed aircraft. ==Operational history==

The Hawk was introduced to the public at Sun N Fun in March 1982 in Lakeland, Florida. The prototype won Best New Design for 1982. At the EAA Convention held in Oshkosh, Wisconsin that same year the Hawk was named Outstanding New Design and also Reserve Grand Champion. At Oshkosh 1983, the Hawk won the Dupont Kevlar Air Recreational Vehicle Design Competition against more than 126 other designs. ==Variants==

Single seaters ;Hawk Classic :Single seat, original design, introduced in 1982 and still in production. 990 flying in 2011. Standard empty weight with a gross weight.. Engines available include the two-stroke Rotax 447, Rotax 503, Rotax 582, Hirth 2702, Hirth 3202, Hirth 3203 and the four-stroke HKS 700E. ;Hawk Plus :Single seat, based on the Arrow two-seater, with only the front seat fitted, intended as a freight carrier. 65 flying in 2011. Standard empty weight with an gross weight. Engines available include the two-stroke Rotax 447, Rotax 503, Rotax 582, Hirth 2702, Hirth 3202, Hirth 3203 and the four-stroke HKS 700E. ;Hawk Sport :Single seat, developed to compete in the 1999 European World Air Games. Eight were flying by 2011. It has competition features, including streamlined struts and landing gear legs, no jury struts, a semi-symmetrical airfoil and extra headroom. Standard empty weight with a gross weight. Engines available include the two-stroke Rotax 447, Rotax 503, Rotax 582 or the Hirth 2702. ;Hawk Ultra :Single seat, based on the Classic. The Classic weighed under when introduced, but became heavier as amenities were added and thus no longer qualified for FAR 103. The Ultra model is a lightened version to comply with the FAR 103 rules. Eight flying in 2011. Standard empty weight with a gross weight. Engines available include the two-stroke Rotax 447 or the Kawasaki 440. ;AG-Hawk :No longer in production. 30 reported flying in 1998. Single seat, based on the Arrow and equipped as an agricultural aircraft for spraying. Standard empty weight with an gross weight. Specified engine was the two-stroke Rotax 582. ==Specifications (Classic) ==