The SyberJet SJ30 is a light business jet built by American company SyberJet Aircraft. In October 1986, Ed Swearingen announced the new design, a 6 to 8 person aircraft powered by two Williams FJ44 turbofans. Initially backed by Gulfstream Aerospace from October 1988, the Jaffe Group took over in September 1989 and the first SJ-30 flew on February 13, 1991 but development halted afterwards. The Taiwan-based Sino Swearingen Aircraft Corporation rescued the program, the jet was stretched by 4.3 ft (1.3 m) into the SJ30-2 with a wingspan increased by six feet (1.8 m). It made its first flight on November 8, 1996 and was certified by the FAA on October 27, 2005, before a first delivery by November 1, 2006. Dubai investors acquired Sino Swearingen in 2008, changing its name to Emivest, but production ceased in November 2009 and the company filed for bankruptcy on October 26, 2010. On April 7, 2011, assets were sold to its aft fuselage supplier Metalcraft Technologies, renaming the company SyberJet Aircraft and planning to restart production in 2019. With updated avionics and interior, the SJ30i made its maiden flight on October 9, 2019. Ed Swearingen announced a new design for a light twin business jet in October 1986, the SA-30 Fanjet. The SA-30 was to be a 6 to 8 person aircraft powered by two Williams FJ44 turbofans and with a highly swept wing of relatively small area. It was planned to be more efficient than contemporary business jets, and to sell for $2 million. The first SJ-30 flew on 13 February 1991, and was demonstrated at the 1991 Paris Air Show, but development ground to a halt when financial support from the state of Delaware was withdrawn. The program was rescued by Lockheed, who arranged a joint venture between Swearingen and Taiwanese investors as part of the offset agreement for Taiwan's purchase of the F-16 fighters. The Sino Swearingen Aircraft Corporation was set up, with the aircraft now to be built at Martinsburg, West Virginia. The SJ30 can seat up to six passengers plus one pilot. A unique feature of this aircraft is that it maintains a 'sea level cabin' (zero cabin altitude) up to 41,000 ft (due to its 12 psi differential pressure) thereby reducing fatigue due to high cabin altitude on long journeys. The SJ30 was the first aircraft designed around a 12 psi (0.83 bar) cabin for more comfort in the cabin. The 12 psi cabin results in a sea level cabin through 41,000 ft and less than a 1,800 ft cabin at its ceiling of 49,000 ft. The 12 psi cabin was first demonstrated in flight by company pilots on August 23, 2004. For moe information on the development, operational history, records and vriants, click here.