Gulfstream G-IV Specs and Description

Posted on June 18, 2013 linda strong gulfstream aircraft

The Gulfstream IV (G-IV or G-4) , designed and manufactured by Gulfstream Aerospace from 1985 to 2003, is part of a family of twin-jet aircraft that are used primarily for private or business use. It made its first flight in September of 1985 and received FAA certification in 1987. It entered service with serial number 1000 in 1987 and was later upgraded to a special purpose GIV-SP version with serial number 1214 in 1993, which was later redesignated as G400.

Gulfstream began production on the G-4 in March 1983 in collaboration with Grumman as a re-engined, stretched fuselage variation of the G-3. By redesigning the wing structure for weight reduction, the G-4 was able to increase dynamic design and reduce cruise drag while increasing range. This model also has a weaker, more swept outboard shock resulting in a lower cruise drag. Other benefits of this design include a lower root bending moment due to more inboard center of pressure, a lower stall speed due to washout and a larger fuel volume due to increased chord. The G-4 has an increased range of 300 miles as a result of these aerodynamic improvements.

The G400 has a large cabin and a range of 4,350 miles, similar to other models of the G series. The typical cruising altitude and speed is 45,000 feet and Mach 0.88. Early models of these were fitted with Honeywell’s SPZ 8000 Avionics package, whereas the SPZ 8400 Avionics Package became standard on later models. The original G-4 seats between 14 to 19 passengers and runs at a length of 88 feet, a height of 24 feet and 5 inches, a wingspan of 77 feet and 10 inches, and an empty weight of 35,500 pounds. The plane is fitted with two Rolls-Royce Tay 611-8 engines, while the later models had two Rolls-Royce 611-8C engines. Later models have a slight variation in dimension as well and run at about $15 million each.

This model of the G-series has been used by the US Air Force, US Army, US Navy, and US Marine Corps as the C-20 series, along with militaries from countless other countries. Botswana, Brunei, Chile, Ivory Coast, Egypt, India, Ireland, Jordan, Japan, Malaysia, Mexico, Netherlands, Saudi Arabia, Sweden, Turkey, Pakistan, and Uganda all operate these aircraft.

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