PK-NAU

PK-NAU is a Boeing 737-500, a twin-engine jet. SkyMeter has tracked 2,478 flights totalling 3,384 hours of airtime via ADS-B across 64 callsigns. The most frequent segment is WARS to WARS. Service window in our records spans 339 days. Of those flights, 22 (0.9%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Boeing 737-500 has a 95 ft wingspan, a maximum takeoff weight of 136,000 lb.

About the Boeing 737-500

The Boeing 737-500 is the smallest and final member of the 737 Classic family, introduced in 1990 as a modern replacement for the aging 737-200. Designed to serve short-haul, high-frequency routes with reduced capacity, the -500 seats 108-132 passengers and features the CFM56-3 high-bypass turbofans that defined the Classic generation. Its compact size and excellent hot-and-high performance made it popular with airlines operating from challenging airports, though it was ultimately overshadowed by the more versatile 737-300 and -400 variants. Boeing delivered only 389 examples before production ended in 1999, making it the rarest of the Classics.

Despite its limited production run, the 737-500 carved out a loyal niche among regional carriers and charter operators, particularly in Russia, Africa, and Southeast Asia where its rugged design and short-field capability proved invaluable. The type can operate from runways as short as 5,900 feet and maintain respectable economics on thin routes where larger jets would fly half-empty. Its maximum cruising altitude of 37,000 feet and range of approximately 2,400 nautical miles allow it to connect secondary cities across continents without the fuel burn penalties of older-generation aircraft.

Today the 737-500 is increasingly rare in commercial service as operators transition to more fuel-efficient Next Generation and MAX variants, but a dedicated fleet remains active in cargo conversion, government transport, and niche passenger operations. The type's simplicity and commonality with other 737 Classics have extended its operational life well beyond Boeing's original projections. SkyMeter has tracked flights across airframes and operators, with the largest observed operator.