B-657X

B-657X is a Comac C919, a twin-engine jet. SkyMeter has tracked 354 flights totalling 712 hours of airtime via ADS-B across 37 callsigns. Service window in our records spans 274 days. The Comac C919 has a maximum takeoff weight of 174,165 lb, medium wake category.

About the Comac C919

The COMAC C919 represents China's ambitious entry into the global narrowbody airliner market, marking the country's first domestically designed and manufactured large commercial jet. Developed by the Commercial Aircraft Corporation of China (COMAC) and first flown in 2017, the C919 directly challenges the Airbus A320 and Boeing 737 families in the 158-192 seat segment. The aircraft's designation reflects its design mission: "C" for China and COMAC, "9" symbolizing longevity in Chinese culture, and "19" indicating its approximate 190-seat capacity in typical configuration. After a lengthy certification process, the C919 entered commercial service with China Eastern Airlines in December 2022, becoming the first Chinese-built jetliner to carry fare-paying passengers on scheduled routes.

Powered by two CFM International LEAP-1C turbofan engines—the same family powering the latest A320neo and 737 MAX variants—the C919 features a modern supercritical wing design and advanced fly-by-wire flight controls. Its maximum takeoff weight of 174,165 pounds positions it squarely between the A320 and 737-800, with a design range of approximately 2,200 nautical miles enabling typical domestic and regional international routes across Asia. The aircraft incorporates a significant proportion of Western systems and components, including avionics from Honeywell and Rockwell Collins, though COMAC has stated intentions to develop indigenous alternatives for future variants to reduce foreign dependency.

The C919's operational envelope mirrors its Western competitors, with a maximum operating speed of 350 knots IAS and Mach 0.82, typical cruise altitudes up to 41,000 feet, and approach speeds around 138 knots. While currently limited to Chinese operators due to regulatory certification constraints—it holds CAAC type certification but not yet FAA or EASA approval—the aircraft represents a strategic milestone in China's aerospace ambitions. COMAC has secured over 1,000 orders, predominantly from Chinese airlines and leasing companies, positioning the C919 as a potential third force in the narrowbody duopoly if it can achieve broader international certification and market acceptance.

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