Cessna 414. The landing gear track was also increased by . The engines' output was boosted to each and max gross weight increased to , creating a much more useful airplane. Fuel capacity was increased to . Even with the weight increase, single-engine performance improved and the stall speed decreased by a couple of knots. After this change, the plane was named the Cessna 402C. Production stopped after the 1985 model year. Modifications In 1969, American Jet Industries began work on a turboprop-powered conversion of the Cessna 402, named the Turbo Star 402, using Allison 250-B17 engines. The prototype flew on 10 June 1970. Further modifications providing increased fuel capacity, higher gross weight, and lower minimum control speed were carried out in 1974 and the modification was re-certified. Scenic Airlines of Las Vegas purchased rights to the design in 1977. The Cessna 402C may be outfitted with vortex generators to increase maximum allowable takeoff weight to , with a zero-fuel weight of . Another modification for the 402C increases the maximum landing weight to , which allows commercial operators to fly with an increased payload on shorter routes. Hendrik Venter of DMI engineering created the Falcon 402: a converted Cessna 402 fitted with a single Walter M601D turboprop in the nose and replacing the two piston engines in the wings with new fuel tanks. The nose was lengthened in order to correct the centre of gravity. It has an increased payload and top speed and can use shorter runways Variants This family of aircraft was built in several versions: Six to eight seat interior, intended for corporate transport. Produced 1966–1972. The replacement for the 401 in the corporate transport role was the 402 Businessliner variant. Certified 20 September 1966. 401A A 401 with minor changes. Certified 29 October 1968. A 401A with minor changes, later replaced by the 402B. Certified 12 November 1969. 402 A 401 with either a utility (for freight) or nine-seat commuter use. Certified 20 September 1966. 402A A 402 with a baggage compartment in lengthened nose and an optional crew entry door. Certified 3 January 1969. 402B Utiliner/Businessliner 402A with minor changes, from 1972 had increased cabin volume and five windows each side. Certified 12 November 1969. Utiliner version has a ten-seat interior intended for commuter airline operations. Businessliner version has a six to eight-seat interior with executive seating intended for corporate transport. 402B with Continental