Heavy Jet (Legacy)
Gulfstream G-IV (GIV / G-1159C): Complete Specs, Performance, and Buyer's Guide (2026)
Gulfstream Aerospace
Gulfstream G-IV (GIV / G-1159C): Complete Specs, Performance, and Buyer's Guide (2026)
The Gulfstream G-IV (G-1159C, in production from 1987 to 1992) is the direct successor to the Gulfstream III and the platform that established Gulfstream as the leader in modern intercontinental business aviation - introducing the first all-glass cockpit in a business jet, substantially quieter and more fuel-efficient Rolls-Royce Tay engines (replacing the G-III's older Spey), and a substantially larger stretched cabin. Gulfstream, in collaboration with Grumman, began work on the Gulfstream IV in March 1983 as a re-engined, stretched fuselage derivative of the Gulfstream III. The first GIV made its maiden flight on September 19, 1985. The model received type certification from the FAA on April 22, 1987 and entered service in 1987 with serial number 1000. Per BusinessAirNews: "The GIV was the first jet to use winglets as standard equipment and can be operated in and out of small airports. It is also the first business jet to have an entire glass cockpit. Despite their higher thrust, its Stage 3 compliant Rolls-Royce Tay 611-8 turbofan engines brought significant fuel burn and noise emission improvements over the Spey engines of the II and III. Its stretched fuselage boasted an aerodynamically and structurally improved wing, 30 per cent fewer parts, greater fuel capacity and range and an increased span tailplane." Powered by two Rolls-Royce Tay Mk 611-8 turbofan engines (each producing 13,850 lbf of thrust at 12,420 lbf flat-rated, three-stage intermediate-pressure compressor connected to fan shaft, 22-blade titanium fan, 12-stage HP compressor, two-stage HP turbine, three-stage LP turbine), the Gulfstream G-IV delivers Mach 0.85 max speed, 488 knots (509 mph / 889 km/h) max cruise, 4,091-4,200 nm range NBAA IFR with 4 passengers, 45,000 ft service ceiling. 15% lower fuel consumption than G-III (479 GPH per planephd / 520 GPH per Globalair). Cabin: 54-inch stretched (4.5 ft longer than G-III with 6th additional window each side), 1,658 cu ft volume, 6.2 ft height. Typical 14 passengers + 2 crew (up to 19-20 maximum). Large galley with shower, full-sized lavatory. Honeywell SPZ-8000 avionics suite, Collins radios FMS, dual Honeywell laser inertial reference systems, six-color CRT EFIS displays. First in Gulfstream family with Goodyear Aerospace brake-by-wire system and Dowty steer-by-wire system. Aircraft: 26.92 m fuselage length, 7.44 m height. Production ended 1992 (replaced by GIV-SP). The G-IV set over 68 world records in its class. June 1987: GIV flew west over 36,800 km around the world in 45h 25m setting 22 class world records. February 1988: another set 11 records flying east. 1990: 35 international records around-the-world flight with Gulfstream CEO Allen Paulson. Pre-owned per Wikipedia (2018): 1990-1992 GIVs $1.6M-$4.4M.
For operators wanting Gulfstream's first all-glass cockpit business jet platform with substantially quieter and more fuel-efficient Rolls-Royce Tay engines, the first business jet with winglets as standard equipment, 54-inch stretched cabin vs G-III (1,658 cu ft volume), Mach 0.85 max speed, 4,091-4,200 nm intercontinental range, 45,000 ft service ceiling, foundational Gulfstream large-cabin heritage, and accessible $1.6M-$4.4M pre-owned market, the Gulfstream G-IV represents Gulfstream's foundational modern intercontinental heavy-iron platform.
Gulfstream G-IV Specifications at a Glance
| Specification | Value |
|---|---|
| Category | Heavy Jet (Legacy) |
| Production Status | Discontinued 1992 (succeeded by GIV-SP) |
| Designation | Gulfstream G-IV (G-1159C) / GIV |
| Manufacturer | Gulfstream Aerospace (General Dynamics) |
| Predecessor | Gulfstream G-III (G-1159A) |
| Program Launch | March 1983 |
| First Flight | September 19, 1985 |
| FAA Certification | April 22, 1987 |
| Production Years | 1987 to 1992 |
| Entered Service Serial Number | 1000 |
| Successor | Gulfstream GIV-SP (1993, serial number 1214) |
| US Military Designations | C-20F, C-20G, C-20H, C-20J |
| Industry Distinction | First all-glass cockpit business jet |
| Industry Distinction | First business jet with winglets as standard equipment |
| Industry Distinction | First Goodyear Aerospace brake-by-wire system |
| Industry Distinction | First Dowty steer-by-wire system |
| Industry Distinction | 30% fewer parts vs G-III |
| Industry Distinction | Substantially Stage 3 compliant Tay 611-8 engines |
| Industry Distinction | 68 world records in class |
| Crew | 2 (sometimes more) |
| Passengers (Typical) | 14 + 2 crew |
| Passengers (Maximum) | Up to 19-20 |
| Engines | 2× Rolls-Royce Tay Mk 611-8 turbofans (replaces Spey) |
| Thrust per Engine | 13,850 lbf (12,420 lbf flat-rated per Wikipedia) |
| Engine Architecture | 22-blade titanium fan / 12-stage HP / 2-stage HP turbine / 3-stage LP turbine |
| Engine Inspection Interval (TBO) | Modern |
| Stage 3 Noise Compliance | Yes (Tay 611-8 standard) |
| Avionics | Honeywell SPZ-8000 (industry-first all-glass cockpit) |
| Avionics Features | 6-color CRT EFIS, Collins radios FMS, dual Honeywell laser INS |
| Brake System | Goodyear Aerospace brake-by-wire (industry-first) |
| Steering System | Dowty steer-by-wire (industry-first) |
| Connectivity | Modern retrofits available |
| Max Speed | Mach 0.85 |
| Cruise Speed (Max per planephd) | 459 KIAS / 889 km/h |
| Long-Range Cruise | 850 km/h (Mach 0.80) |
| Max Range (per planephd) | 4,091 nm |
| Max Range (per Jetcraft NBAA IFR 4 pax) | 4,200 nm |
| Max Range (per AeroCorner) | 4,000+ nm |
| Service Ceiling | 45,000 ft |
| Cabin Length (Stretched 54 in vs G-III) | 45.8 ft (estimated) |
| Cabin Width | 7.3 ft (same as G-III) |
| Cabin Height | 6.2 ft (stand-up) |
| Cabin Volume | 1,658 cu ft |
| Cabin Windows | 6 each side (per G-III's 5, +1 added with stretch) |
| Aircraft Length | 26.92 m (88.3 ft) |
| Aircraft Height | 7.44 m (24.4 ft) |
| Fuel Consumption (per planephd) | 479 GPH (15% less than G-III) |
| Fuel Consumption (per Globalair) | 520 GPH |
| Production Total | 500+ aircraft (G-IV family eventually 900+ including GIV-SP, G300, G350, G400, G450) |
| Original New Price (per ACS) | $26,000,000 |
| Pre-Owned (per BJT) | $2,800,000 average |
| Pre-Owned (per Wikipedia 1990-1992) | $1,600,000 to $4,400,000 (2018 pricing) |
History as Gulfstream's Modern Large-Cabin Successor
The G-IV represents Gulfstream's strategic decision to modernize the foundational large-cabin platform with substantial engine, cabin, and avionics improvements.
Platform timeline:
- March 1983: G-IV development work began (collaboration with Grumman)
- September 19, 1985: First flight (one of four production prototypes)
- April 22, 1987: FAA type certification
- 1987: Entered service (serial number 1000)
- June 1987: GIV sets 22 world records flying west around world in 45h 25m over 36,800 km
- February 1988: Another GIV sets 11 world records flying east around world
- 1990: Allen Paulson + Gulfstream crew set 35 international records around the world
- 1992: Production transitions to GIV-SP (serial 1214 in 1993)
- 2003: Production ends (per JetOptions, broader G-IV family)
- January 19, 2018: Last G450 delivered (ending 30-year G-IV family production run)
- 2018: G-IV family replaced by G500
- Total G-IV family production: Over 900 aircraft (GIV + GIV-SP + G300 + G350 + G400 + G450)
Per JetOptions: "The Gulfstream IV helped establish Gulfstream as a leader in the long-range, large-cabin segment of business aviation. Its design innovations influenced the next generation of Gulfstream jets, including the Gulfstream G550 and the flagship G650."
Why the G-IV Is Foundational Modern Gulfstream Heavy
The G-IV introduced industry-defining capabilities:
1. First All-Glass Cockpit Business Jet
The defining G-IV advantage:
- Industry-first all-glass cockpit: Premium positioning
- Honeywell SPZ-8000 avionics: Modern
- Six color CRT displays: Industry-leading
- Modern situational awareness: Premium positioning
- Industry-leading: Premium
2. Rolls-Royce Tay 611-8 Engines (Stage 3 Compliant)
- 13,850 lbf per engine: Premium thrust class
- Substantially quieter than G-III Spey: Industry-leading
- 15% fuel consumption reduction: Premium positioning
- Stage 3 compliant: Industry-leading
- Modern propulsion: Industry-leading
- 22-blade titanium fan: Modern engineering
3. First Winglets as Standard Equipment
- Industry-first: Premium positioning
- Modern aerodynamics: Industry-leading
- Premium positioning: Modern
- Industry-distinct: Premium
4. 54-Inch Cabin Stretch vs G-III
- Substantially larger cabin: Industry-leading
- 6th additional window each side: Premium positioning
- 1,658 cu ft cabin volume: Industry-leading
- Modern customization potential: Premium positioning
5. 30% Fewer Parts vs G-III
- Modern engineering efficiency: Industry-leading
- Reduced maintenance complexity: Premium positioning
- Modern production: Industry-leading
- Industry-distinct: Premium
6. First Brake-by-Wire + Steer-by-Wire
- Goodyear Aerospace brake-by-wire: Industry-leading
- Dowty steer-by-wire: Premium positioning
- Industry-firsts: Modern positioning
- Industry-leading pilot interface: Premium
7. Aerodynamically + Structurally Improved Wing
- Greater fuel capacity: Premium positioning
- Increased span tailplane: Modern
- Substantially improved efficiency: Industry-leading
- Industry-leading aerodynamics: Premium positioning
8. 4,091-4,200 nm Range
- Substantially extended range vs G-III: Modern positioning
- Intercontinental capability: Premium positioning
- Industry-leading for class: Premium positioning
- Industry-distinct: Premium
Cabin Interior
The G-IV cabin features industry-leading 54-inch stretch over G-III:
| Cabin Measurement | Value |
|---|---|
| Cabin Length | ~45.8 ft (54-inch stretch vs G-III's 41.3 ft) |
| Cabin Width | 7.3 ft (same as G-III) |
| Cabin Height | 6.2 ft (stand-up) |
| Cabin Volume | 1,658 cu ft |
| Cabin Windows | 6 each side (+1 vs G-III) |
Standard Configuration
- 14 Passengers Typical (per Jetcraft): Premium positioning
- Up to 19-20 Passengers Maximum: Premium maximum
- 2 Crew Seats: Standard
- Three Distinct Living Zones: Premium customization
- Large Galley with Shower: Industry-leading
- Full-Sized Lavatory: Standard
- Modern Configurations: Premium positioning
Cabin Features
- 1,658 cu ft cabin volume: Industry-leading
- 54-inch cabin stretch vs G-III: Substantial
- 6 cabin windows each side: Industry-leading
- 6.2 ft cabin height (stand-up): Premium
- 7.3 ft cabin width: Industry-leading
- Large galley with shower: Industry-first for class
- Full-sized lavatory: Premium
- 19 suitcases baggage hold (internally accessible): Premium
- Modern customization potential: Premium positioning
- Premium fit + finish: Industry-leading
Performance
Speed and Range
| Performance Metric | Value |
|---|---|
| Max Speed | Mach 0.85 |
| Max Cruise Speed | 488 knots (509 mph / 889 km/h) |
| Long-Range Cruise | 850 km/h (Mach 0.80) |
| Max Range (per planephd) | 4,091 nm |
| Max Range (per Jetcraft NBAA IFR 4 pax) | 4,200 nm |
| Service Ceiling | 45,000 ft |
Runway Performance
| Field Performance | Value |
|---|---|
| MTOW | ~73,200 lb (later G-IVSP increased) |
| Modern Operational Flexibility | Premium positioning |
| First Use of Winglets as Standard | Industry-leading |
Typical Mission Examples
- New York to London - non-stop comfortable (transatlantic)
- Los Angeles to Hawaii - non-stop very comfortable
- Coast-to-coast U.S.: Premium positioning
- June 1987 record: 45h 25m around world (west)
- 1990 record: 35 international around-world records (Allen Paulson)
- 1988 record: 11 records around world (east)
Engines
Two Rolls-Royce Tay Mk 611-8 turbofan engines (replaces Spey from G-II/G-III), each producing 13,850 lbf of thrust (12,420 lbf flat-rated per Wikipedia).
Key features:
- Rolls-Royce Tay 611-8: Modern proven
- 13,850 lbf per engine: Premium thrust class
- 27,700 lbf total thrust: Industry-leading
- 22-blade titanium fan: Modern engineering
- Three-stage intermediate-pressure compressor + 12-stage HP compressor: Modern
- Two-stage HP turbine + Three-stage LP turbine: Modern
- Stage 3 noise compliant: Industry-leading
- 15% fuel consumption reduction vs G-III Spey: Premium positioning
Avionics: Honeywell SPZ-8000 (First All-Glass Cockpit)
Industry-first all-glass cockpit:
- First all-glass cockpit in business jet: Premium positioning
- Honeywell SPZ-8000 avionics suite: Modern
- Six color CRT EFIS displays: Industry-leading
- Collins radios FMS: Standard
- Dual Honeywell laser inertial reference systems: Premium positioning
- Modern flight management: Integrated
- Modern weather radar: Standard
- TCAS, EGPWS: Standard
- Premium pilot interface: Industry-leading
Operating Costs
| Cost Item | Per Hour |
|---|---|
| Fuel (479-520 GPH) | $3,000 to $3,300 |
| Engine Reserve (Tay 611-8) | $700 |
| Airframe Maintenance | $1,200 |
| Insurance + Hangar | $700 |
| Crew | $1,000 |
| Other Variable | $400 |
| Total Direct Operating Cost (Estimated) | ~$7,300/hr |
Annual operating budget estimate: $2-2.5M.
Pricing
| Year/Status | Price |
|---|---|
| Original New Price (per ACS) | $26,000,000 |
| Pre-Owned Average (per BJT) | $2,800,000 |
| Pre-Owned (1990-1992 per Wikipedia 2018) | $1,600,000 to $4,400,000 |
| Hourly Charter Rate | $5,500+ |
Mission Profile
Best fit profiles:
- Step-Up From G-III: First all-glass cockpit + Tay engines + cabin stretch
- Step-Up From Light/Mid Jets: Intercontinental range with stand-up cabin
- Transatlantic Operators: Premium positioning
- Premium Gulfstream Heritage Operators: Industry-leading
- Multi-Generational Operators: Premium positioning
- Accessible-Entry Modern Heavy Jet Operators: $1.6-4.4M
- US Military Operators: C-20F/G/H/J variants
- Operators Valuing First All-Glass Cockpit: Modern positioning
Less suited if:
- You need maximum range (consider G-V at 6,500 nm)
- You require modern Pro Line 21 avionics (consider G-IVSP/G400/G450)
- You need lowest acquisition cost (consider G-III)
- You require Stage 4 noise compliance (consider G-V or modern)
Pros and Cons
What the G-IV Does Well
- 4,091-4,200 nm NBAA IFR range
- Mach 0.85 max speed
- 488 knot (509 mph) max cruise
- 850 km/h long-range cruise
- 45,000 ft service ceiling
- Two Rolls-Royce Tay Mk 611-8 engines (13,850 lbf each)
- 27,700 lbf total thrust
- Substantially quieter than G-III Spey engines
- Stage 3 noise compliant (industry-leading)
- 15% fuel consumption reduction vs G-III
- First business jet with all-glass cockpit (industry-first)
- First business jet with winglets as standard equipment
- First Goodyear Aerospace brake-by-wire system
- First Dowty steer-by-wire system
- Honeywell SPZ-8000 avionics
- Six color CRT EFIS displays
- Dual Honeywell laser INS
- 54-inch cabin stretch vs G-III
- 6th additional window each side
- 1,658 cu ft cabin volume
- 6.2 ft stand-up cabin
- 7.3 ft cabin width
- 14 passengers typical (up to 19-20 maximum)
- Three distinct living zones
- Large galley with shower (industry-first)
- Full-sized lavatory
- 19 suitcase internally-accessible baggage hold
- 30% fewer parts than G-III
- 68+ world records in class
- 1987 around-world west record: 45h 25m
- 1990 around-world records: 35 international (Allen Paulson)
- 1988 around-world east records: 11
- $26M original new price (1987)
- $1.6M-$4.4M pre-owned (1990-1992 per Wikipedia)
- $2.8M average pre-owned (per BJT)
- Premium Gulfstream heritage
- US military C-20F/G/H/J variants
- Strong residual value
- Modern retrofits available
- Gulfstream worldwide service network
Tradeoffs to Understand
- Production ended 1992 (succeeded by GIV-SP)
- Range less than G-V (4,200 vs 6,500 nm)
- Original Honeywell SPZ-8000 less modern than Pro Line 21 in later variants
- Smaller cabin than modern G450/G550
- Substantial annual operating cost
Frequently Asked Questions
How is the G-IV different from the G-III?
The G-IV (1987-1992) is the direct successor to the G-III (1980-1986). Key improvements: substantially quieter and more fuel-efficient Rolls-Royce Tay 611-8 engines (13,850 lbf vs G-III's Spey 11,400 lbf) with 15% fuel consumption reduction and Stage 3 noise compliance, first all-glass cockpit in business jet (Honeywell SPZ-8000 with 6 CRT displays), first winglets as standard equipment, first brake-by-wire / steer-by-wire systems, 54-inch cabin stretch (1,658 cu ft vs G-III's 1,502 cu ft), 6th additional window each side, 30% fewer parts, substantially improved wing.
How is the G-IV different from the GIV-SP?
The GIV-SP (1993-2002) is the improved version of the G-IV. Key improvements: 1,400 lb higher MTOW (74,600 lb), 7,500 lb higher max landing weight, hydro-mechanical brake system (replaces brake-by-wire), redesigned wheels and tires, increased weight capacity, 4,109 nm range capability with 4 passengers. Same Tay 611-8 engines, same airframe. GIV-SP was later renamed G400 (serial 1500+).
How is the G-IV different from the G-V?
The G-V (1995-2002) is the ultra-long-range successor to the G-IV family. Key differences: G-V has substantially longer range (6,500 nm vs G-IV's 4,200 nm), new BMW Rolls-Royce BR710 engines (14,750 lbf each vs G-IV's Tay 13,850 lbf), new wing, stretched fuselage. The G-V is "first ultra-long-range business jet produced by Gulfstream" per Wikipedia.
What engines power the G-IV?
Two Rolls-Royce Tay Mk 611-8 turbofan engines, each producing 13,850 lbf of thrust (12,420 lbf flat-rated). The Tay 611-8 is "Stage 3 compliant" and "substantially quieter and more fuel-efficient than the Spey engines that powered the G-II and G-III." Per BusinessAirNews: "Despite their higher thrust, its Stage 3 compliant Rolls-Royce Tay 611-8 turbofan engines brought significant fuel burn and noise emission improvements over the Spey engines of the II and III." 22-blade titanium fan, 12-stage HP compressor, two-stage HP turbine, three-stage LP turbine.
How far can a G-IV fly?
Per planephd, the G-IV has 4,091 nm range. Per Jetcraft, the G-IV has 4,200 nm range NBAA IFR with 4 passengers. Per AeroCorner: "Typical range exceeded 4,000 nautical miles, depending on configuration and payload." This enables transcontinental and select transatlantic flights including New York to London non-stop comfortable.
What records did the G-IV set?
The Gulfstream G-IV set over 68 world records in its class. In June 1987, a GIV flew west over 36,800 km around the world in 45 hours 25 minutes setting 22 class world records. In February 1988, another GIV flew east setting 11 records. In 1990, Gulfstream CEO Allen Paulson and a Gulfstream flight crew set 35 international records for around-the-world flight in a GIV. A GIV-SP set new world speed and distance records on a routine business flight from Tokyo to Albuquerque in March 1993.
What's special about the G-IV's avionics?
The G-IV was the first business jet to have an entire glass cockpit. The Honeywell SPZ-8000 avionics suite features six color CRT displays, Collins radios FMS, dual Honeywell laser inertial reference systems. This was substantially advanced for 1987 era and established the industry standard for modern business jet flight decks.
Who flies G-IV aircraft?
G-IV operators include private owners, businesses, corporate flight departments, ultra-high-net-worth individuals (an early notable customer famously paid $40M for a Gulfstream V in 1999), the US Air Force (C-20F/G/H/J variants), the National Oceanic and Atmospheric Administration (NOAA - operating a modified GIV-SP for tropical cyclone observations), NASA, and government agencies worldwide. Per AeroCorner: "Many remain in service today in business, government, and special mission roles."
The Bottom Line
The Gulfstream G-IV (G-1159C, in production from 1987 to 1992) represents Gulfstream Aerospace's foundational modern intercontinental business jet that established Gulfstream as the leader in modern large-cabin business aviation. With substantial industry-defining capabilities (first business jet with all-glass cockpit featuring Honeywell SPZ-8000 avionics + six color CRT EFIS displays + Collins radios FMS + dual Honeywell laser inertial reference systems, first business jet with winglets as standard equipment, first Goodyear Aerospace brake-by-wire system, first Dowty steer-by-wire system, two Rolls-Royce Tay Mk 611-8 turbofan engines providing 13,850 lbf of thrust each substantially quieter and more fuel-efficient than the Spey engines of the G-II/G-III with Stage 3 noise compliance and 15% fuel consumption reduction - per BusinessAirNews: "Despite their higher thrust, its Stage 3 compliant Rolls-Royce Tay 611-8 turbofan engines brought significant fuel burn and noise emission improvements over the Spey engines of the II and III", Mach 0.85 max speed with 488 knot / 509 mph / 889 km/h max cruise and 850 km/h / Mach 0.80 long-range cruise, 4,091-4,200 nm NBAA IFR range with 4 passengers, 45,000 ft service ceiling, substantial cabin with 54-inch stretch vs G-III featuring 1,658 cu ft cabin volume + 6.2 ft height stand-up cabin + 7.3 ft cabin width + 6th additional window each side + large galley with shower industry-first + full-sized lavatory, 14 typical passengers + 2 crew (up to 19-20 maximum), three distinct living zones, 30% fewer parts than G-III, aerodynamically and structurally improved wing with greater fuel capacity and increased span tailplane), the Gulfstream G-IV delivered Gulfstream's foundational modern intercontinental heavy-iron platform. Gulfstream collaborated with Grumman beginning in March 1983 to develop the G-IV as a re-engined, stretched fuselage derivative of the Gulfstream III. The first G-IV made its maiden flight on September 19, 1985. FAA type certification awarded April 22, 1987. Entered service in 1987 (serial number 1000). Standard configuration accommodates 14 passengers + 2 crew (up to 19-20 maximum) in three distinct living zones with large galley featuring shower + full-sized lavatory + 19-suitcase internally-accessible baggage hold. Aircraft: 26.92 m (88.3 ft) fuselage length, 7.44 m height. The G-IV set over 68 world records in its class. In June 1987, a GIV flew west over 36,800 km around the world in 45 hours 25 minutes setting 22 class world records. In February 1988, another GIV flew east setting 11 class records. In 1990, Gulfstream CEO Allen Paulson and a Gulfstream flight crew set 35 international records for around-the-world flight in a GIV. Production ended in 1992 (succeeded by GIV-SP serial 1214 in 1993, later renamed G400 from serial 1500). Total G-IV family production reached over 900 aircraft (GIV + GIV-SP + G300 + G350 + G400 + G450) by the last G450 delivery on January 19, 2018 ending a 30-year production run, replaced by the G500. Per JetOptions: "The Gulfstream IV helped establish Gulfstream as a leader in the long-range, large-cabin segment of business aviation. Its design innovations influenced the next generation of Gulfstream jets, including the Gulfstream G550 and the flagship G650." US military designations C-20F, C-20G, C-20H, C-20J. NOAA operates a GIV-SP for tropical cyclone observations (N49RF). Original new price per ACS: $26M. Pre-owned market per Wikipedia 2018: 1990-1992 G-IVs at $1.6M-$4.4M. Pre-owned average per BJT: $2.8M. Fuel consumption: 479 GPH per planephd / 520 GPH per Globalair. Gulfstream worldwide service network continues to support the G-IV platform.
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Talk to a Quantum Jets broker for Gulfstream G-IV market intelligence and pre-buy diligence.
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Related Aircraft Guides:
- Gulfstream G-III: Direct Predecessor (1980-1986)
- Gulfstream G-IVSP: Direct Successor (1993-2002)
- Gulfstream G400: Renamed GIV-SP Successor (2002-2003)
- Gulfstream G300: Shorter-Range Variant
- Gulfstream G450: Modern Heritage Successor (2004-2018)
- Gulfstream G-V: Ultra-Long-Range Sibling
- Gulfstream G550: Modern Ultra-Long-Range Successor
- Bombardier Challenger 601: Direct Twin-Engine Heavy Competitor
Production of the Gulfstream G-IV ended 1992. All G-IV acquisitions are pre-owned. Gulfstream Aerospace provides worldwide parts/support. Specifications accurate as of 2026.