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Gulfstream-III (G-III) Performance and Specifications
September 28, 2009


Length: 83 ft 2 in
Wingspan: 77 ft 10 in
Height: 24 ft 6 in

Primary Mission/Capabilities

  • Cargo transport
  • Safety chase
  • Weather reconnaissance
  • Contingency support


Operating altitude: 45,000 ft (max)
Mach: 0.85M (max)
Speed: Mach 0.85 – top speed; Mach 0.75 – for maximum range
Load factor: 69,700 (full fuel, 12 passengers/cargo and 2 aircrew)


Range/Duration: 3,400 nm/5 hr (nominal); up to 7 hr (.82M @ 37K)
Engine: Two Rolls-Royce Spey 511-8 turbofan engines
Engine thrust: 11,400 lb (5,170 kg) each
Test Instrumentation: Data Collection and Processing System (DCAPS)
Aircraft systems: Video collection and distribution system, satellite communications systems, satellite phone, an upgraded 120-amp electrical power system, centerline pylon with a standard MAU-12 mount, capable of carrying up to 1200 lb externally, easily configurable rack mounting, seating and multiple power configurations for both AC and DC applications

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Page Last Updated: August 23rd, 2013
Page Editor: NASA Administrator