Gulfstream IV

The Gulfstream IV, also written G-IV or GIV, is a family of twinjet aircraft built by Gulfstream Aerospace in Savannah, Georgia, mainly for private and business use. Work began in March 1983 as a re-engined, stretched derivative of the Gulfstream III, and the first aircraft flew on 19 September 1985, with FAA certification following on 22 April 1987. Two Rolls-Royce Tay turbofans give more thrust than the Gulfstream III, and a redesigned wing cut cruise drag and added more than 300 nautical miles of range; it was also the first business jet with an entire glass cockpit. The family grew into the GIV-SP, later called the G400, the shorter-range G300 and the longer G450 and G350. Production ran from 1985 until 2018 and passed 900 aircraft, and the United States military flew it as the C-20F, C-20G, C-20H and C-20J.