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Gulfstream G-159 Gulfstream I / C-4

Grumman Gulfstream



Dubbed the Gulfstream I (GI), the turbo-prop aircraft was named after the Gulf Stream, the current that flows along the coast of Florida, which was a favored vacationing spot for Grumman executives. The Gulfstream I is a business transport designed to carry a crew of two with 10 to 14 passengers, which was introduced in 1958. Power is provided by twin Rolls-Royce Dart turboprop engines turning four-blade Rotol constant-speed propellers.

The Gulfstream I first flew on 14 August 1958 and was the first United States twin-engine business aircraft to be certificated to cruise at 30,000 feet, and had a maximum speed of 350 mph at 25,000 feet and a range of 2,200 miles.


The Gulfstream continued in production in 1960, with about 40 ordered.


A later version received certification as a 24-passenger variation for feeder-line use. Two Gulfstream offspring were enlisted for military use: the VC-4A was a U.S. Coast Guard transport and the TC-4C was an “avionics classroom” for the U.S. Navy.

The aircraft, specifically for business travel, was a success in the business world, prompting Grumman to develop a jet-powered corporate aircraft called the Gulfstream II or GII.



Seats 10-24.
Gross wt. 35,100 lb.
Empty wt. 21,900 lb.
Fuel capacity 1,550 USG.
Engines two 2,210 shp Rolls-Royce Darts.
Top speed 348 mph.
Cruise speed 288 mph.
Initial climb rate 1,900 fpm.
Approach speed 128 mph.
Range 2,540 miles.
Ceiling 33,600 ft.
Takeoff run 2,550 ft.
Landing roll 1,525 ft.


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