OK-DOI

OK-DOI is a Zlin Aviation Z-43, a single-engine piston aircraft. SkyMeter has tracked 104 flights totalling 46 hours of airtime via ADS-B across 2 callsigns. The most frequent segment is LKSU to LKSU. Service window in our records spans 385 days. The Zlin Aviation Z-43 has a maximum takeoff weight of 2,646 lb, light wake category.

About the Zlin Aviation Z-43

The Zlin Z-43 is a four-seat, single-engine touring and training aircraft built by Czechoslovakia's Zlin Aviation (now part of the Czech Republic's aviation industry) starting in the late 1960s. Powered by a 210-horsepower Avia M337 inline engine (a license-built variant of the Walter Minor), the Z-43 was designed as a rugged, all-metal successor to earlier Zlin trainers and aerobatic types, offering better payload and range for flight schools, aero clubs, and private owners across Eastern Europe. Its distinctive inverted-gull wing and tricycle landing gear made it stable and forgiving for student pilots, while its sturdy construction allowed operation from grass strips and unimproved fields common in rural Czechoslovakia and neighboring countries during the Cold War era.

Though never produced in large numbers compared to Western contemporaries like the Cessna 172 or Piper Cherokee, the Z-43 earned a reputation for reliability and low operating costs in the Eastern Bloc. A handful were exported to Western Europe and North America after the fall of the Iron Curtain, where they remain curiosities in the general aviation fleet: capable tourers with a cruise speed around 130 knots and a range of roughly 500 nautical miles. The type's inline engine and metal construction require maintenance expertise less common outside Europe, contributing to its rarity in the U.S. registry.

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