Gulfstream G300 makes first flight, launching super-midsize flight test programme

Gulfstream Aerospace has successfully completed the first flight of its new super-midsize business jet, the Gulfstream G300, marking the official start of the aircraft’s flight test programme and underlining the maturity of the development effort. The maiden flight took place on December 5, 2025, from Ben Gurion International Airport and lasted 2 hours and 25 minutes, reaching Mach 0.75 at 30,000 feet.

Introduced in September 2025, the G300 is positioned as a new benchmark in the super-midsize segment. It features the largest cabin in its class, seating up to 10 passengers across two living areas, with 10 panoramic oval windows, a full galley and ample baggage space. Passenger comfort is further enhanced by the lowest cabin altitude in the segment, 100% fresh air, plasma air ionisation and low cabin noise levels.

The aircraft combines comfort with performance, offering a range of 3,600 nautical miles at Mach 0.80 or 3,000 nautical miles at Mach 0.84. Fuel efficiency is supported by Gulfstream’s swept wing design and Honeywell HTF7250G engines. The G300 is equipped with the new Harmony Flight Deck, featuring advanced safety systems such as Phase-of-Flight intelligence, synthetic vision and predictive landing performance technology.

Ahead of the first flight, the programme completed more than 2,000 hours of ground testing, with two additional test aircraft already in production as Gulfstream advances toward certification.