5Y-KQB

5Y-KQB is a Boeing 737-300, a twin-engine jet. SkyMeter has tracked 430 flights totalling 2,148 hours of airtime via ADS-B across 14 callsigns. The most frequent segment is HKJK to HKJK. Service window in our records spans 386 days. The Boeing 737-300 has a 102 ft wingspan, a maximum takeoff weight of 139,500 lb.

About the Boeing 737-300

The Boeing 737-300 launched the Classic generation in 1984, stretching the fuselage and introducing CFM International's revolutionary CFM56-3 high-bypass turbofan engines to replace the original 737's noisy, thirsty Pratt & Whitney JT8Ds. The -300 became Boeing's best-selling airliner of the 1980s, with 1,113 delivered before production ended in 1999, proving that the 1960s airframe design still had decades of commercial life ahead. Airlines loved the type's 2,950-nautical-mile range and 128-149 passenger capacity, perfect for short-to-medium-haul routes, while the new engines cut fuel burn by 25 percent and slashed noise footprint enough to meet increasingly strict airport curfews.

The -300 introduced the distinctive flattened engine nacelles that became the visual signature of all Classic 737s, a compromise necessitated by mounting larger-diameter engines under the famously low-slung wing without lengthening the landing gear. Though most passenger examples have retired from major carriers in North America and Europe, the type remains common in secondary markets, cargo conversion, and charter operations worldwide. The 737-300's rugged design and proven reliability have given it remarkable longevity in roles ranging from scheduled service in developing markets to specialized operations like gravel-strip access in remote regions.

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