Service History
The G150 carved out a distinctive niche in the competitive midsize business jet market during its 11-year production run. Of the 123 aircraft built, 119 remain in active service as of 2024, demonstrating remarkable longevity for a business aircraft. The type achieved an 83 percent market penetration in North America, with only 6 percent operating in Europe and the remainder scattered across Central and South America and Asia. Most operators chose outright ownership over leasing, with 116 aircraft owned versus only 14 under lease agreements.
The Manufacturer
Gulfstream Aerospace Corporation traces its origins to 1958 when Roy Grumman, co-founder of Grumman Aircraft Engineering Corporation, established the company in Bethpage, New York. The company's inaugural business aircraft, the Grumman Gulfstream GI, completed its maiden flight on August 14, 1958. By 1962, the Gulfstream GII had become the first business jet to cross the Atlantic Ocean, establishing the brand's reputation for long-range capability.
The company relocated to Savannah, Georgia in 1966 after separating from the Grumman brand. NASA selected two modified Gulfstream GIIs for space shuttle crew training beginning in 1973, further enhancing the manufacturer's prestige. General Dynamics acquired Galaxy Aerospace from Israel Aircraft Industries in 2001, transferring the rights to the Astra and Galaxy aircraft lines to its Gulfstream subsidiary. Rather than consolidating production in the United States, Gulfstream maintained operations at IAI's Tel Aviv facility while completing final assembly and interior work in Georgia.
Design Evolution
The G150 evolved from a distinguished lineage of Israeli-designed business jets, including the Astra 1125, Astra SP, and Astra SPX produced from 1986 to 2002. When Gulfstream acquired the production line, the IAI Astra was rebranded as the G100 and manufactured until 2006. The G150 addressed the primary criticism of its predecessor by incorporating a significantly larger cabin—217 cubic feet more volume and 12 inches greater width than the G100.
Engineers retained the proven aerodynamic form while expanding the fuselage to create three distinct seating configurations. The Executive variant featured a front club section with two aft chairs, while the Universal configuration placed a chair on the right side opposite a divan on the left, with a four-seat club section aft. The Hallmark variant modified the Universal layout with two chairs on the right side.
Engine & Technical Performance
Two Honeywell TFE731-40AR turbofan engines power the G150, each delivering 4,420 pounds of thrust while consuming 192 gallons per hour. The twin-spool turbofan design incorporates a 6,000-hour overhaul interval, contributing to the aircraft's reputation for operational economy. This powerplant combination enables a maximum cruise speed of 475 knots and a long-range cruise speed of 430 knots at Mach 0.80.
The aircraft requires a two-pilot crew and achieves a service ceiling exceeding 45,000 feet. With four passengers aboard under NBAA IFR reserves, the G150 delivers a range of 2,988 nautical miles, making it suitable for transcontinental flights and international routes. The cabin volume of 465 to 521 cubic feet, depending on configuration, provided more space than any competitor in the midsize category during its production years.
Production Legacy
Gulfstream announced on September 28, 2016, that it had sold the final G150, concluding the aircraft's 10-year production run. The last aircraft was delivered in mid-2017, bringing total production to exactly 123 units. The decision to end production reflected the company's strategic shift toward super-midsize and large-cabin aircraft, particularly the G280 successor that accommodates up to 10 passengers in a 21-foot 4-inch cabin.
Before entering service, a G150 established a city-pair speed record on the Tel Aviv to Geneva route, demonstrating the aircraft's performance capabilities. The unique international production arrangement, with airframes manufactured in Israel and completed in Georgia, represented one of the most successful cross-border partnerships in business aviation.
Current Market Status
As of 2024, approximately 30 G150s appear on the pre-owned market, with each aircraft averaging 280 days before sale completion. Only one aircraft has been retired from service, while three remained in various stages of completion when production ended. The high operational retention rate of 96.7 percent reflects the aircraft's mechanical reliability and continued relevance in the midsize business jet segment, despite being succeeded by the larger G280 in Gulfstream's current product lineup.