N999GX

N999GX is a Gulfstream Aerospace G650, a twin-engine jet operated by ARGENT FOX LLC. SkyMeter has tracked 324 flights totalling 205 hours of airtime via ADS-B. The most frequent segment is KBMC to KHIF. Service window in our records spans 431 days. Of those flights, 10 (3.1%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Gulfstream Aerospace G650 has a maximum takeoff weight of 103,600 lb, medium wake category.

About the Gulfstream Aerospace G650

The Gulfstream G650 holds the distinction of being the world's fastest and longest-range purpose-built business jet when it entered service in 2012, a crown it retained until its own stretched sibling, the G650ER, arrived in 2014. Built by Gulfstream Aerospace in Savannah, Georgia, the G650 was designed to connect any two cities on Earth with at most one refueling stop, offering a maximum range of 7,000 nautical miles at Mach 0.85 and seating up to 19 passengers in bespoke luxury cabins. Its Rolls-Royce BR725 engines push the aircraft to a maximum operating speed of Mach 0.925 (faster than any other civilian business jet in production) and a maximum altitude of 51,000 feet, well above most airline traffic and weather.

The G650 set multiple city-pair speed records during its certification campaign, including New York to Tokyo and Los Angeles to Melbourne, demonstrating both its raw performance and its ability to maintain high cruise speeds over ultra-long sectors. Its fly-by-wire flight controls, advanced Honeywell Primus Epic avionics suite, and sixteen panoramic windows made it a technological leap forward in the large-cabin business jet category. The aircraft's wing design incorporates a transonic airfoil optimized for high-speed cruise, while its T-tail configuration and powerful thrust reversers provide excellent short-field performance despite its size and weight.

The G650 competes directly with the Bombardier Global 7500 and Dassault Falcon 8X in the ultra-long-range segment, though it remains the speed king among them. Operators prize the type for its ability to fly nonstop from Los Angeles to London, Singapore to San Francisco, or Dubai to New York while maintaining a cabin altitude of just 4,100 feet at maximum cruise altitude (significantly lower than most airliners), reducing passenger fatigue on marathon flights. The G650ER variant, introduced in 2014, extends range to 7,500 nautical miles with additional fuel capacity.

SkyMeter has tracked flights across airframes and operators over routes, with the largest observed operator.