The highly anticipated G400 is reaching new heights. The first fully outfitted Gulfstream G400 has completed its first flight, marking another major milestone as the program advances toward certification. The aircraft flew for 2 hours and 46 minutes and reached 48,000 feet, putting its 11-passenger cabin and systems through their paces in flight. And the momentum continues. En route to #NBAA2026 in Las Vegas, an experimental G400 also established a new city-pair speed record from Miami using a blend of sustainable aviation fuel. Together, these milestones mark continued progress toward G400 certification.