# Gulfstream IV

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"Gulfstream G400" redirects here; not to be confused with [Gulfstream G400/G500/G600](/source/Gulfstream_G400%2FG500%2FG600).

Family of private twinjet aircraft manufactured by Gulfstream Aerospace

Gulfstream IV The Gulfstream IV is a low-wing aircraft with twin aft-mounted turbofans and a T-tail, here in service of the United States Department of Commerce General information Type Business jet Manufacturer Gulfstream Aerospace Status In service Primary users United States Air Force United States Army United States Navy National Oceanic and Atmospheric Administration Number built 900+[1] History Manufactured 1985–2018 First flight September 19, 1985 Developed from Gulfstream III Developed into Gulfstream V

The **Gulfstream IV** (or **G-IV** or **GIV**) and derivatives are a family of [twinjet](/source/Twinjet) aircraft, mainly for private or [business](/source/Business_jet) use. They were designed and built by [Gulfstream Aerospace](/source/Gulfstream_Aerospace), a [General Dynamics](/source/General_Dynamics) company based in [Savannah, Georgia](/source/Savannah%2C_Georgia), [United States](/source/United_States), from 1985 until 2018. Aircraft power is provided by two [Rolls-Royce RB.183 Tay](/source/Rolls-Royce_RB.183_Tay) [turbofans](/source/Turbofans).

Upon delivery of the last G450, over 900 GIV/GIV-SP/G450 units had been produced. The last of the G450s was delivered on 19 January 2018 after 365 deliveries over 12 years, ending a 30-year production run, to be replaced by the [G500](/source/Gulfstream_G500).[1]

## Development

Executive cabin

Gulfstream, in collaboration with [Grumman](/source/Grumman), began work on the Gulfstream IV in March 1983 as a re-engined, stretched fuselage derivative of the [Gulfstream III](/source/Gulfstream_III). The first GIV made its maiden flight on September 19, 1985.[2] The model received type certification from the FAA on April 22, 1987.[3] The G-IV entered into service with serial number 1000 in 1987 and was upgraded to the special purpose **GIV-SP** version at serial number 1214 in 1993. It was later redesignated **G400** at serial number 1500.[4] A shorter range variant was created based on the GIV and given the **G300** designation in 2002.[2]

In 2001, Gulfstream began work on an improved version of the GIV-SP, originally designated **GIV-X**. It was later renamed **G450**. The G450 is lengthened 1 ft (30 cm) over the G400 and shares the forward fuselage and larger cockpit of the [G550](/source/Gulfstream_G550). Following its first flight on 30 April 2003, production of the G450 began in October 2004, replacing the G400. The G450 has better performance and comes with the PlaneView cockpit with four 14 in (360 mm) [liquid crystal displays](/source/Liquid_crystal_display) and a [Head up display](/source/Head_up_display) (HUD). The shorter range **G350** version of the G450 was developed and received certification in 2004.[5][6]

By 2018, 1990 to 1992 GIVs were for sale at $1.6-4.4 million, 1992 to 1999 GIVSPs were listed for $1.25-5.2 million, 15-year-old G300s and G400s were available for $4.5-7 million and 2006 to 2016 G450s at $9.95-23.75 million.[7]

## Design

G450 updated flight deck

Compared to the [Gulfstream III](/source/Gulfstream_III), a decision to redesign the wing structure for weight reduction presented an opportunity for an aerodynamic redesign of the wing to reduce cruise drag and increase range. Wing contour modifications had to be restricted to the forward 65% of wing chord so that no redesign of the control surfaces would be necessary. Modification of the inboard wing would have entailed a redesign of the fuselage floor structure, consequently this region of the wing was not modified. Outboard wing modifications were aimed at reducing the peak subcritical pressure coefficient and moving it aft in an effort to reduce shock strength and increase shock sweep.[8]

At 12,420 lbf (55.2 kN), the [Rolls-Royce Tay](/source/Rolls-Royce_RB.183_Tay) fanjet engines provided more thrust than the 11,400 lbf (51 kN) of the Gulfstream III. Speed, noise levels, emissions, fuel economy, range, and cargo capacity were also markedly improved over the earlier model.[9]

The Gulfstream IV wing has a weaker, more swept outboard shock resulting in a lower cruise drag. Other benefits from this design are a lower root bending moment due to an inboard center of pressure, a lower stall speed due to washout and a larger fuel volume due to increased chord. These aerodynamic improvements result in an increase in range of over 300 nmi (560 km; 350 mi).[10] In addition to the wing redesign, the Gulfstream IV also became the first business jet to have an entire glass cockpit.[11]

The G400 has a large cabin, long range of 4,350 nautical miles (8,060 km) and the same comfort and design that characterize the G series. Maximum cruise height and speed are 45,000 ft and [Mach](/source/Mach_number) 0.85. Earlier models were fitted with Honeywell's SPZ 8000 Avionics package. The SPZ 8400 Avionics Package was an option, becoming standard on later models. Its second-hand price was below $15 million in 2024) in 2009 (~$21.3 million in 2024).[4] Gulfstream had also considered making a 5.5 m (18 ft) longer, 24-27 seat model for airline use.[9]

## Operational history

[NOAA](/source/National_Oceanic_and_Atmospheric_Administration)'s GIV and [WP-3](/source/Lockheed_WP-3D_Orion)

The [National Oceanic and Atmospheric Administration](/source/National_Oceanic_and_Atmospheric_Administration) (NOAA) operates a GIV-SP (N49RF) modified to fly [scientists](/source/Scientist) and crew members at 45,000 ft (14,000 m) around [tropical cyclones](/source/Tropical_cyclone). The aircraft was modified to drop instruments called "[dropsondes](/source/Dropsonde)" to measure windspeed, [barometric pressure](/source/Barometric_pressure), [humidity](/source/Humidity), and temperature as they fall to the surface of the ocean. By sampling the cyclone with these dropsondes over a 4,000 mi (6,400 km) track around the storm, the forecasters at NOAA's [National Hurricane Center](/source/National_Hurricane_Center) and [Hurricane Research Division](/source/Hurricane_Research_Division) can better predict where the hurricane will be "steered" by the upper level winds. They also predict [wind shear](/source/Wind_shear) that will either increase or decrease a hurricane's strength. The GIV-SP is suited for this mission since it is fast, and can fly long distances with ample cabin space for the crew and instruments.[12] In 2009, the NOAA GIV-SP was further modified by the addition of a side-scanning [Doppler weather radar](/source/Doppler_weather_radar) to the rear fuselage. This radar is used for storm cloud profiling.[13]

In June 1987, a Gulfstream IV set 22 world records in its class flying west around the world in 45 hr 25 min. The next year another GIV set 11 world records flying east around the world.[14] In 1990, Gulfstream [CEO](/source/CEO) [Allen Paulson](/source/Allen_Paulson) and a Gulfstream flight crew set 35 international records for around-the-world flight in a GIV.[15]

## Variants

### C-20F/G/H/J military variants

[U.S. Army](/source/U.S._Army) C-20F

The U.S. military variant of the IV, designated *C-20F/G/H/J Gulfstream IV* in [Department of Defense](/source/United_States_Department_of_Defense) service.[16] The *C-20F* is a GIV model operated by the [U.S. Army](/source/U.S._Army) in a command/executive transport role.

The *C-20G* aircraft[17] may be configured for cargo operations, 26 passenger operations or combinations of the two. With passengers seats removed, it may be configured as three pallets with no passengers or two pallets and eight passengers or one pallet and fourteen passengers. With full seating, the aircraft is capable of accommodating up to twenty-six passengers and a crew of four. A hydraulically operated cargo door is installed on the starboard side of the aircraft, and a ball roller cargo floor is capable of accommodating [palletized cargo](/source/Palletized_cargo). The C-20G was operated by Fleet Logistics Support Squadron Four Eight (VR-48) at [Naval Air Facility](/source/Naval_air_station#United_States_Navy), [Andrews Air Force Base](/source/Andrews_Air_Force_Base), Maryland before its 2012 deactivation. It is operated by VMR Detachment Kaneohe Bay, [Marine Corps Air Station Kaneohe Bay](/source/Marine_Corps_Air_Station_Kaneohe_Bay), [Marine Corps Base Hawaii](/source/Marine_Corps_Base_Hawaii).[18] The C-20G is also known as the "Grey Ghost"[19]

The *C-20H* is a GIV-SP model operated by the [U.S. Air Force](/source/U.S._Air_Force) in a command/executive transport role. The *C-20J* is a GIV-SP model operated by the U.S. Army in a command/executive transport role.

The [United States Department of Defense](/source/United_States_Department_of_Defense) C-20A/B/C/D/E aircraft are all [Gulfstream III](/source/Gulfstream_III) variants.

### G350/G450

The G450 (GIV-X) is 12 in (30 cm) longer and the main door is moved aft; it has updated engines, flight deck and systems.

The **G450** is a designation for the model **GIV-X**, approved by the FAA on August 12, 2004, as is the **G350**, which has a reduced fuel capacity. Compared to the **Gulfstream IV**, its fuselage is 12 in (300 mm) longer and the main entry door relocated aft. The [Rolls-Royce Tay](/source/Rolls-Royce_RB.183_Tay) 611 engines are replaced by 611-8Cs with FADEC, redesigned thrust reversers, nacelles and pylons which increases range and payload, coupled with aerodynamic improvements. Many [Gulfstream V-SP](/source/Gulfstream_V-SP) improvements are used: the [Honeywell](/source/Honeywell) advanced flight deck display suite, electrical power generation, cabin temperature control and pressurization, nose and nose landing gear. It also has an improved APU and flap/stab actuation system, redesigned main landing gear wheels and brakes, flight control system hard-over protection system.[3]

By the end of the G450 production run, 365 aircraft were produced, with prices ranging from $15 million to $32 million.[20]

## Operators

### Civil operators

Gulfstream IV [Air Ambulance](/source/Air_Ambulance)

The aircraft is operated by private individuals, companies and executive charter operators, and in [fractional ownership programs](/source/Fractional_ownership_of_aircraft).

### Government and military operators

A Gulfstream IV of the [Royal Netherlands Air Force](/source/Royal_Netherlands_Air_Force)

[Japan Air Self-Defense Force](/source/Japan_Air_Self-Defense_Force) U-4

[Brunei](/source/Brunei)

- [Sultan of Brunei](/source/Sultan_of_Brunei)[21]

**[Chile](/source/Chile)**

- [Chilean Air Force](/source/Chilean_Air_Force)[22]

**[Ivory Coast](/source/Ivory_Coast)**

- [Côte d'Ivoire Air Force](/source/Air_Force_of_Ivory_Coast)[23]

**[Japan](/source/Japan)**

- [Japan Air Self-Defense Force](/source/Japan_Air_Self-Defense_Force)[22]

**[Malaysia](/source/Malaysia)**

- [Sultan of Johor](/source/Sultan_of_Johor)[21]

**[Netherlands](/source/Netherlands)**

- [Royal Netherlands Air Force](/source/Royal_Netherlands_Air_Force)[24]

**[Pakistan](/source/Pakistan)**

- [Pakistan Air Force](/source/Pakistan_Air_Force)[25]

**[Saudi Arabia](/source/Saudi_Arabia)**

- [Royal Saudi Air Force](/source/Royal_Saudi_Air_Force)[22]

**[Sweden](/source/Sweden)**

- [Swedish Air Force](/source/Swedish_Air_Force)[22] S102B Korpen electronic intelligence (ELINT) aircraft[26]

**[Tanzania](/source/Tanzania)**

- [Tanzania Air Force Command](/source/Tanzania_Air_Force_Command)[27]

**[United States](/source/United_States)**

- [United States Air Force](/source/United_States_Air_Force)[22]

- [United States Army](/source/United_States_Army)[22] 1 Gulfstream IV (C-20F) as of January 2025[28]: 37

- [United States Navy](/source/United_States_Navy)[22]

- [United States Marine Corps](/source/United_States_Marine_Corps)[22]

- [National Oceanic and Atmospheric Administration](/source/National_Oceanic_and_Atmospheric_Administration)

### Former military operators

**[Ireland](/source/Republic_of_Ireland)**

- The [Irish Air Corps](/source/Irish_Air_Corps) previously operated a G-IV as a government transport.[29]

**[Uganda](/source/Uganda)**

- The Government of [Uganda](/source/Uganda) purchased one G-IV SP in December 2000 at a cost of US$31.5 million for Presidential flights. It was replaced in February 2009 by a [G550](/source/G550).[30]

## Specifications

3-view line drawing of the Gulfstream IV-SP

Passenger Layout

Model GIV[31] GIV-SP[31] G350[32] G450[33] Cockpit crew Two Passengers 19 Length 88 ft 4 in (26.92 m) 89 ft 4 in (27.23 m) Wingspan 77 ft 10 in (23.72 m) Wing area 950.39 sq ft (88.3 m2) Overall height 24 ft 5 in (7.45 m) 25 ft 2 in (7.67 m) MTOW 73,200 lb (33,203 kg) 74,600 lb (33,838 kg) 70,900 lb (32,160 kg) 74,600 lb (33,838 kg) Empty weight 35,500 lb (16,103 kg) 42,700 lb (19,368 kg) 43,000 lb (19,504 kg) Cruising speed Mach 0.80 – Mach 0.85 (459–488 kn; 850–903 km/h; 528–561 mph) Maximum speed Mach 0.88 (505 kn; 935 km/h; 581 mph) Range 4,220 nmi (7,815 km; 4,856 mi) 3,800 nmi (7,038 km; 4,373 mi) 4,350 nmi (8,056 km; 5,006 mi) Service ceiling 45,000 ft (13,716 m) Engines (×2) Rolls-Royce Tay 611-8 Rolls-Royce Tay 611-8C Thrust 13,850 lbf (61.6 kN)

## See also

**Related development**

- [Gulfstream III](/source/Gulfstream_III)

- [Gulfstream V](/source/Gulfstream_V)

- [Gulfstream G500/G550](/source/Gulfstream_G550)

**Related lists**

- [List of active United States military aircraft](/source/List_of_active_United_States_military_aircraft)

## References

### Citations

1. ^ [***a***](#cite_ref-161021PR_1-0) [***b***](#cite_ref-161021PR_1-1) Sarsfield, Kate (2018-01-23). ["Gulfstream launches G500 global demo tour"](https://www.flightglobal.com/news/articles/gulfstream-launches-g500-global-demo-tour-445118/). *Flightglobal*.

1. ^ [***a***](#cite_ref-Frawley_Civil_GIV_2-0) [***b***](#cite_ref-Frawley_Civil_GIV_2-1) Frawley, Gerald. "Gulfstream IV, G300 & G400". *The International Directory of Civil Aircraft, 2003/2004*. Fishwick, Act: Aerospace Publications, 2003. [ISBN](/source/ISBN_(identifier)) [1-875671-58-7](https://en.wikipedia.org/wiki/Special:BookSources/1-875671-58-7).

1. ^ [***a***](#cite_ref-typeCert_3-0) [***b***](#cite_ref-typeCert_3-1) ["Type Certificate date Sheet NO. A12EA, revision 46"](https://web.archive.org/web/20161115025943/http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/2d504046f9657ec386257f610074fcfb/$FILE/A12EA_Rev46.pdf) (PDF). FAA. February 22, 2016. Archived from [the original](http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/2d504046f9657ec386257f610074fcfb/$FILE/A12EA_Rev46.pdf) (PDF) on November 15, 2016. Retrieved June 22, 2016.

1. ^ [***a***](#cite_ref-flagship_4-0) [***b***](#cite_ref-flagship_4-1) ["Gulfstream IV"](https://aviationweek.com/awin/gulfstream-iv). *Business and Commercial Aviation*. Aviation Week. January 2009.

1. **[^](#cite_ref-5)** Gerzanics, Michael (22 November 2004). ["Flight Test: Gulstream \[sic\] G450 – Heir Apparent"](https://www.flightglobal.com/flight-test-gulstream-g450-heir-apparent/57841.article). *Flight Global*. Retrieved 15 October 2023.

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1. **[^](#cite_ref-8)** Chandrasekharan, R.M., Murphy, W.R., Taverna, F.P. and Boppe, C.W., "Computational Aerodynamic of the Gulfstream IV Wing", AIAA paper 85-0427, presented at the AIAA 23rd Aerospace Sciences Meeting, Reno Nevada, January 1985.

1. ^ [***a***](#cite_ref-WAW220336_9-0) [***b***](#cite_ref-WAW220336_9-1) Smith, David C. (March 1986). "Everybody takes a number". *[Ward's Auto World](/source/Ward's)*. **22** (3). Ward's Communications: 36.

1. **[^](#cite_ref-10)** Boppe, Charles W., "Computational Aerodynamic Design: X-29, the Gulfstream Series and a Tactical Fighter", SAE paper 851789, 1985 Wright Brothers Award Paper, presented at the Aerospace Technology Conference & Exposition, Long Beach California, October 1985.

1. **[^](#cite_ref-thomas_11-0)** Thomas, Joel (19 May 2014). ["History of the Gulfstream Aerospace Corporation"](https://www.stratosjets.com/history-of-gulfstream-aerospace-corporation/). stratos jet charters.

1. **[^](#cite_ref-noaa_givsp_12-0)** "[Gulfstream IV-SP (G-IV)](http://www.aoc.noaa.gov/aircraft_g4.htm) [Archived](https://web.archive.org/web/20070218124547/http://www.aoc.noaa.gov/aircraft_g4.htm) 2007-02-18 at the [Wayback Machine](/source/Wayback_Machine)." [National Oceanic and Atmospheric Administration](/source/National_Oceanic_and_Atmospheric_Administration) web site.

1. **[^](#cite_ref-13)** [Picture of the Gulfstream Aerospace G-IV Gulfstream IV-SP aircraft](http://www.airliners.net/photo/NOAA/Gulfstream-Aerospace-G-IV/1566075/L) Retrieved 1 November 2011.

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1. **[^](#cite_ref-19)** [The Grey Ghost](http://www.pearlharborvisitorcenter.com/archives/The_Grey_Ghost.html) [Archived](https://web.archive.org/web/20110704105551/http://www.pearlharborvisitorcenter.com/archives/The_Grey_Ghost.html) 2011-07-04 at the [Wayback Machine](/source/Wayback_Machine) Hawaii Reporter: Dispatches from the War on Terrorism, September 24, 2004

1. **[^](#cite_ref-20)** George, Fred (November 24, 2014). ["An Operational Look at: Gulfstream's G450"](http://aviationweek.com/business-aviation/operational-look-gulfstreams-g450). *Business & Commercial Aviation*.

1. ^ [***a***](#cite_ref-Professional_Pilot_Magazine_21-0) [***b***](#cite_ref-Professional_Pilot_Magazine_21-1) ["jeteditor.com"](http://jeteditor.com/tjsult.htm). *ww38.jeteditor.com*.

1. ^ [***a***](#cite_ref-World_Air_Forces_2022_22-0) [***b***](#cite_ref-World_Air_Forces_2022_22-1) [***c***](#cite_ref-World_Air_Forces_2022_22-2) [***d***](#cite_ref-World_Air_Forces_2022_22-3) [***e***](#cite_ref-World_Air_Forces_2022_22-4) [***f***](#cite_ref-World_Air_Forces_2022_22-5) [***g***](#cite_ref-World_Air_Forces_2022_22-6) [***h***](#cite_ref-World_Air_Forces_2022_22-7) ["World Air Forces 2022"](https://www.flightglobal.com/flight-international/how-afghanistans-fall-reshaped-world-air-forces-inventory/146576.article). Flightglobal Insight. 2022. Retrieved 15 April 2022.

1. **[^](#cite_ref-23)** [Cooper et al. 2011](#CITEREFCooperWeinertHinzLepko2011), p. 225

1. **[^](#cite_ref-24)** ["Gulfstream IV"](https://www.defensie.nl/organisatie/luchtmacht/materieel/vliegtuigen-en-helikopters/gulfstream-iv) (in Dutch). Netherlands Ministry of Defence. Retrieved 17 October 2019.

1. **[^](#cite_ref-25)** ["Aviation Photo #6744749: Gulfstream Aerospace G-IV Gulfstream IV-SP - Pakistan - Air Force"](https://www.airliners.net/photo/Pakistan-Air-Force/Gulfstream-Aerospace-G-IV-Gulfstream-IV-SP/6744749?qsp=eJwtjbEOwjAQQ3%2BlupkNwdCtDKx04AdOFwuilia6Owmiqv9OUthsP8teSdLi%2BPi9ZFBPBlZ50oEyK7%2BM%2BpUmlHfSUDWNPEVzXrohandNKqhNS%2BqXUmlgxyCC7Aj//KYB2hBM9tFHOzk1CR1/7niuNkTLM%2B8rcI4zbdsXIKszaQ%3D%3D).

1. **[^](#cite_ref-26)** ["Sweden sends surveillance aircraft to eastern Mediterranean"](https://www.janes.com/osint-insights/defence-news/sweden-sends-surveillance-aircraft-to-eastern-mediterranean). May 2019.

1. **[^](#cite_ref-27)** [Cooper et al. 2011](#CITEREFCooperWeinertHinzLepko2011), p. 232

1. **[^](#cite_ref-Military_Balance_2025_28-0)** *The Military Balance*. [International Institute for Strategic Studies](/source/International_Institute_for_Strategic_Studies). 2025. [ISBN](/source/ISBN_(identifier)) [978-1-041-04967-8](https://en.wikipedia.org/wiki/Special:BookSources/978-1-041-04967-8).

1. **[^](#cite_ref-29)** ["Government jet sold for €462k"](https://www.rte.ie/news/2015/0330/690897-government-jet-sold-to-us-company/). March 30, 2015 – via www.rte.ie.

1. **[^](#cite_ref-30)** ["Museveni's Shs88 Billion Jet Arrives"](https://web.archive.org/web/20150618173711/http://www.observer.ug/component/content/article?id=2655%3Amuseveni-shs-88bn-jet-arrives). *[The Observer (Uganda)](/source/The_Observer_(Uganda))*. February 2009. Archived from [the original](http://www.observer.ug/component/content/article?id=2655:museveni-shs-88bn-jet-arrives) on 18 June 2015. Retrieved 19 May 2015.

1. ^ [***a***](#cite_ref-GIVspecs_31-0) [***b***](#cite_ref-GIVspecs_31-1) Frawley, Gerard. ["Gulfstream Aerospace G-IV Gulfstream IV"](http://www.airliners.net/aircraft-data/gulfstream-aerospace-g-iv-gulfstream-iv/238). *The International Directory of Civil Aircraft*. Technical Data & Specifications.

1. **[^](#cite_ref-32)** ["G350 Specifications"](https://www.guardianjet.com/jet-aircraft-online-tools/aircraft-brochure.cfm?m=Gulfstream-G350-129). Gulfstream. 2010.

1. **[^](#cite_ref-33)** ["G450 Specifications"](https://web.archive.org/web/20160313051203/http://www.gulfstream.com/images/uploads/brochures/aircraft/G450SpecSheet.pdf) (PDF). Gulfstream. September 2015. Archived from [the original](http://www.gulfstream.com/images/uploads/brochures/aircraft/G450SpecSheet.pdf) (PDF) on 2016-03-13. Retrieved 2016-11-29.

### Bibliography

- Cooper, Tom; Weinert, Peter; Hinz, Fabian; Lepko, Mark (2011). *African MiGs, Volume 2: Madagascar to Zimbabwe*. Houston: Harpia Publishing. [ISBN](/source/ISBN_(identifier)) [978-0-9825539-8-5](https://en.wikipedia.org/wiki/Special:BookSources/978-0-9825539-8-5).

## External links

[Wikimedia Commons](/source/Wikimedia_Commons) has media related to:

[Gulfstream IV](https://commons.wikimedia.org/wiki/Gulfstream_IV) ([category](https://commons.wikimedia.org/wiki/Category:Gulfstream_IV))

- [Gulfstream G450](http://www.gulfstream.com/aircraft/gulfstream-g450)

- George, Fred (April 2000). ["Gulfstream IV SP Operator Survey"](https://d16bsf97ryvc45.cloudfront.net/Media/2013/01/g400.pdf) (PDF). *Business & Commercial Aviation*. Aviation Week.

- George, Fred (December 2003). ["Gulfstream's 450 Surprise"](http://awin.aviationweek.com/portals/awin/Interactives/BCA/G450_pilot-report/G450_pilot-report.html). *Business & Commercial Aviation*. Aviation Week.

v t e Gulfstream aircraft Grumman G-159 G-1159 G-I G-II American Jet Industries/ Gulfstream American Hustler Peregrine 600 Peregrine Gulfstream 550 690C 690D 695 695A 695B Jetprop 840 Jetprop 900 Jetprop 980 Jetprop 1000 Jetprop 1200 Peregrine 600 Peregrine 100 G-1159A G-1159B G-IV GIV-X G-V GV-SP GVI GVII G100/G150 G200 G280 G-IIB G-III G-IV/GIV-SP G-V G300/G350/G400/G450 G500/G550 G500/G600 G650/G650ER G700/G800 Military versions C-4 C-11 C-20 C-20F/G/H C-37A C-37B C-38A X-54

v t e United States military transport aircraft designations, Army/Air Force and Tri-Service systems Army/Air Force sequence (1925–1962) C-1 C-2 C-3 C-4 C-5 C-6 C-7 C-8 C-9 C-10 C-11 C-12 C-131 C-14 C-15 C-16 C-17 C-18 C-19 C-20 C-21 C-22 C-23 C-24 C-25 C-26 C-27 C-28 C-29 C-30 C-31 C-32 C-33 C-34 C-35 C-36 C-37 C-38 C-39 C-40 C-41 C-41A C-42 C-43 C-44 C-45 C-46 C-47 C-47F C-47T AC-47 C-48 C-49 C-50 C-51 C-52 C-53 C-54 C-55 C-56 C-57 C-58 C-59 C-60 C-61 C-62 C-63 C-64 C-65 C-66 C-67 C-68 C-69 C-70 C-70B C-71 C-72 C-73 C-74 C-75 C-76 C-77 C-77B–D C-78 C-79 C-80 C-81 C-82 C-83 C-83A C-83B C-84 C-85 C-86 C-87 C-88 C-89 C-90 C-91 C-92 C-93 C-94 C-95 C-96 C-97 KC-97 C-98 C-99 C-100 C-101 C-102 C-103 C-104 C-105 C-106 C-107 C-108 C-109 C-110 C-111 C-112 C-113 C-114 C-115 C-116 C-117 C-117D C-118 C-119 AC-119 C-120 C-121 C-121F EC-121 C-122 C-123 C-123A C-124 C-125 C-126 C-1272 DHC C-127 Douglas C-127 C-128 C-129 C-130 C-130J AC-130 DC-130 EC-130/H HC-130 KC-130 LC-130 MC-130 WC-130 C-131 NC-131H C-132 C-133 C-134 C-135 KC-135 C-136 C-1372 Boeing YC-137 DHC YC-137 C-137 C-1381 C-1391 C-140 C-141 C-142 Tri-service sequence (1962–present) C-1 C-2 C-3 C-4 C-5 C-6 C-72 C-7 RC-7 C-8 C-9 C-102 C-10 KC-10 C-11 C-12 RC-12 C-131 C-14 C-15 C-161 C-17 C-18 C-19 C-202 C-20A–D C-20F–J C-21 C-22 C-23 C-24 C-25 C-25B Bridge C-26 C-27 C-27J C-28 C-29 C-301 C-31 C-32 C-33 C-341 C-35 C-363 C-37 C-37B C-38 C-391 C-40 C-41 C-421 C-431 C-441 C-45 C-46 Revived original sequence (2005–present) C-143 C-144 C-145 C-146 C-147 Non-sequential designations C-767 C-880 Related designations CT-39 CT-43 CV-2 CV-7 1 Not assigned • 2 Assigned to multiple types • 3 Unconfirmed

v t e Swedish military aircraft designations 1926–current By role Attack aircraft (A) A 1 A 28 A 29 A 32 A 36 AJ 37 A 38 JAS 39 Bombers (B) B 1 B 2 B 3 B 4 B 5 B 6 B 7 B 8 B 16 B 17 B 18 B 24 B 26 Army aeroplanes (Fpl) Fpl 51 Fpl 53 Fpl 54 Fpl 61 Gliders2 (G/Lg/Se) G 101 Se 102 Se 103 Se 104 Lg 105 Helicopter2 (Hkp) Hkp 1 Hkp 2 Hkp 3 Hkp 4 Hkp 5 HKP 6 HKP 9 HKP 10 HKP 11 HKP 14 HKP 15 HKP 16 Fighters (J) J 1 J 2 J 3 J 4 J 5 J 6 J 7 J 8 J 9 J 10 J 11 J 12 J 19 J 20 J 21/21R J 22 J 23 J 24 J 26 J 27 J 28 J 29 J 30 J 31 J 32 J 33 J 34 J 35 JA 37 JAS 39 Advanced trainers (Ö) Ö 1 Ö 2 Ö 3 Ö 4 Ö 5 Ö 6 Ö 7 Ö 8 Ö 9 Trials aircraft (P) P 1 P 2 P 3 P 4 P 5 P 6 P 7 P 8/P 8A/P 8B P 9A/P 9B Reconnaissance (S) S 1 S 2 S 3 S 4 S 5 S 6 S 7 S 8 S 9 S 10 S 11 S 12 S 13 S 14 S 15 S 16 S 17 S 18 S 22 S 26 S 29 S 31 S 32 S 35 SF 37/SH 37 JAS 39 S 100 Trainers (Sk) Sk 1 Sk 2 Sk 3 Sk 4 Sk 5 Sk 6 Sk 7 Sk 8 Sk 9 Sk 10 Sk 11 Sk 12 Sk 14 Sk 15 Sk 16 Sk 25 Sk 26 Sk 28 Sk 35 Sk 38 Sk 40 Sk 50 Sk 60 Sk 61 Torpedo bombers (T) T 1 T 2 T 16 T 18 Transports (Trp/Tp) Trp 1 Trp 2/2A Trp 3 Trp 4 Tp 5 Tp 6 Tp 7 Tp 8/8A Tp 9 Tp 10 Tp 16 Tp 24 Tp 45 Tp 46 Tp 47 Tp 52 Tp 53 Tp 54 Tp 55 Tp 78 Tp 79 Tp 80 Tp 81 Tp 82 Tp 83 Tp 84 Tp 85 Tp 86 Tp 87 Tp 88 Tp 89 Tp 91 Tp 100 Tp 101 Tp 102 Tp 103 Post–1940 unified sequence 16 17 18 19 20 21/21R 22 23 241 B/J 24 Tp 24 25 261 B/S 26 J/S 26 Sk 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 45 46 47 50 51 52 53 54 55 60 61 78 79 80 81 82 83 84 85 86 Tp 87 88 89 91 100 S 100 101 102 103 Italics Pre-unification designations • 1 Assigned to multiple types • 2 Not unified with main sequence

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Adapted from the Wikipedia article [Gulfstream IV](https://en.wikipedia.org/wiki/Gulfstream_IV) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Gulfstream_IV?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.