Gulfstream III: Performance, Specifications, and Features

1Overview of the Gulfstream III

The Gulfstream III represents excellence in business aviation, distinguished as a large jet with exceptional capabilities. This sophisticated aircraft features a spacious cabin volume of 1,345 cubic feet, accommodating 12-16 passengers in premium comfort. Operating with a crew of two to three members, the aircraft is powered by twin Rolls-Royce Spey turbofan engines.

• Maximum Speed – 576 mph
• Range – 4,200 miles
• Baggage Capacity – 157 cubic feet
• Fuel Consumption – 550 gallons per hour
• Model Designation – G-1159A

History and Development of the Gulfstream III

The Gulfstream III emerged as a significant advancement in private aviation, with production spanning from 1979 to 1986. Taking its maiden flight on December 2, 1979, and officially entering the market in 1980, this aircraft represented an evolution from the Grumman Gulfstream II. During its seven-year production run, it became the preferred choice for corporations, high-net-worth individuals, and government agencies, setting new standards in business aviation.

Key Features of the Gulfstream III

The Gulfstream III distinguishes itself through exceptional design elements and capabilities that revolutionized business aviation.

• Wide cabin design with generous headroom
• Fully enclosed bathroom facility
• Transcontinental flight capability
• Versatile seating configurations
• Access to challenging runways

It is also worth looking at Gulfstream G100: Specifications, Features, and Performance Insights (Business Jets).

2Performance Specifications of the Gulfstream III

Engine and Speed Capabilities

Powered by twin Rolls-Royce Spey Mk 511-8 turbofan engines, each producing 11,400 pounds of thrust, the Gulfstream III achieves remarkable performance metrics. The aircraft maintains a cruise speed of 508 mph (442 knots) and can reach a service ceiling of 45,000 feet, enabling operations above most weather disturbances and commercial traffic.

Range and Fuel Efficiency

The Gulfstream III demonstrates impressive range capabilities, covering up to 4,200 miles without refueling. With a fuel capacity of 4,275 gallons and consumption rate of 550 gallons per hour during cruise, it efficiently connects major business centers worldwide. When configured for eight passengers, it maintains Mach 0.8 while achieving a range of 3,800 nautical miles, offering an optimal balance between speed and distance.

3Interior and Comfort of the Gulfstream III

The Gulfstream III’s interior exemplifies luxury business aviation with its meticulously designed cabin space. The generous dimensions create an optimal environment for both work and relaxation:

• Length – 45.1 feet
• Width – 7.3 feet
• Height – 6.1 feet
• Total Volume – 1,345 cubic feet
• Standard Seating – 11-13 passengers
• High-density Configuration – up to 16 passengers

The aircraft’s thoughtful design incorporates essential amenities for transcontinental travel, including a full-sized galley and an enclosed lavatory available in forward or rear positions. The accessible in-flight baggage compartment proves invaluable during long journeys, allowing passengers to retrieve personal items as needed.

Cabin Layout and Amenities

• Forward club seating with executive chairs
• Central conference area with deployable table
• Rear section with additional seating or convertible divan
• Comprehensive entertainment system
• Individual lighting controls
• Advanced climate control system
• Sound-dampening materials
• Fully-equipped galley with hot/cold food preparation

Cockpit and Avionics

The Gulfstream III’s flight deck combines reliable analog systems with advanced technology, operated by a crew of two with optional third crew member capacity. The ergonomic cockpit layout ensures efficient access to critical controls and features:

• Weather radar systems
• Ground proximity warning systems
• Global communication equipment
• Modern glass panel displays (upgraded)
• GPS integration
• Traffic collision avoidance systems (TCAS)
• Enhanced ground proximity warning systems (EGPWS)

More on this: Gulfstream G200: Specifications, Performance, and Features (Business Jets).

4Comparing the Gulfstream III with Other Jets

The Gulfstream III maintains its market appeal through an exceptional balance of performance and value. Its aerodynamic improvements over the Gulfstream II include extended wingspan (+6 feet), 5-foot winglets, and redesigned wing leading edge, enhancing overall efficiency.

Gulfstream III vs. Gulfstream IV

Gulfstream III vs. Competitors

In the large-cabin business jet segment, the Gulfstream III maintains significant competitive advantages while facing modern challengers. The aircraft competes directly with several notable models:

• Bombardier Challenger 600 series
• Dassault Falcon 900
• Embraer Legacy

The G-III’s established maintenance network and proven reliability record provide significant advantages over less common competitor models. For value-conscious buyers entering the large-cabin jet market, the aircraft delivers essential performance requirements without the premium pricing associated with latest-generation business jets. This balance of acquisition cost versus capability, combined with its spacious cabin environment, makes the Gulfstream III a compelling choice for organizations and individuals seeking premium air travel capabilities.