First Fully Outfitted G400 Takes Flight

Test aircraft flew from Dallas Love Field, while an experimental G400 test article set a new city pair speed record.

Jack Daleo

Thursday, October 22, 2026 at 12:00 PM ET

Verified

Edited By:

Travis Tingle

Gulfstream’s large-cabin G400 jet will fill a niche between the G280 and G500/G600. [Credit: Gulfstream Aviation]

Key Takeaways:

Gulfstream's first fully outfitted G400 test aircraft completed its maiden flight, focusing on cabin system evaluations, and is the fourth and final model to join the G400 test fleet.
Despite the aircraft performing well through its rigorous certification program, Gulfstream has not provided an updated certification date, acknowledging potential delays from the initial 2025 delivery target.
The G400 is positioned as a new large-cabin aircraft, not a replacement, featuring an aerodynamic design for fuel efficiency, advanced Symmetry Flight Deck avionics, and a spacious cabin with the lowest cabin altitude in its class.

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Gulfstream has announced the first fully outfitted test aircraft in its next-generation G400 program completed its maiden flight, moving the large-cabin jet closer to certification.

The manufacturer Monday said the test article took off from Dallas Love Field (KDAL) in Texas and flew for about 2 hours and 46 minutes, reaching an altitude of 48,000 feet. The model is dedicated to evaluating cabin systems at altitude as well as testing functionality and comfort in flight. It flew in an 11-passenger configuration over two-and-a-half living areas.