N779XY

N779XY is a Boeing 777-9, a twin-engine jet operated by BOEING CO. SkyMeter has tracked 204 flights totalling 489 hours of airtime via ADS-B across 2 callsigns. The most frequent segment is KBFI to KBFI. Service window in our records spans 372 days. Of those flights, 16 (7.8%) carry at least one detected incident — go-around, unstable approach, stall warning, or runway excursion. The Boeing 777-9 has a 235 ft wingspan, a maximum takeoff weight of 775,000 lb.

About the Boeing 777-9

The Boeing 777-9 is the largest and longest twin-engine widebody airliner ever built, stretching 251 feet from nose to tail and capable of seating over 400 passengers in typical configurations. Launched as the flagship of Boeing's 777X family in 2013, the 777-9 represents a clean-sheet redesign of the world's most successful widebody twin, featuring composite folding wingtips that span 235 feet for aerodynamic efficiency yet fold upward to fit standard airport gates, the first such mechanism on a commercial jetliner. Powered by the massive GE9X engines—the largest and most powerful jet engines ever built for commercial aviation, each producing over 100,000 pounds of thrust—the 777-9 promises a 7,600-nautical-mile range and fuel efficiency improvements of roughly 10 percent over the 777-300ER it is designed to replace.

Development has been protracted, with first flight occurring in January 2020 but certification repeatedly delayed due to structural and regulatory challenges. The aircraft's composite wing, which incorporates lessons from the 787 Dreamliner program, required extensive testing to validate its novel folding mechanism and load distribution under extreme conditions. Maximum takeoff weight of 775,000 pounds places the 777-9 firmly in ICAO's Super (J) wake turbulence category alongside the Airbus A380 and Boeing 747-8, reflecting the immense vortex energy generated by its high-aspect-ratio wings.

As of late 2024, the 777-9 remains in flight test status with Boeing's own test fleet conducting certification trials across North America and internationally. The type has accumulated hundreds of test flights evaluating everything from high-altitude performance at 43,100 feet to crosswind landings and engine-out handling. Approach speeds around 145 knots and a maximum operating speed of Mach 0.89 align closely with the proven 777 family envelope, ensuring commonality for pilots transitioning from earlier variants. SkyMeter has tracked flights across airframes and operators, with the primary observed operator during the ongoing certification campaign.