WAK 12-2016 LWS-4 (PZL.39)

PZL.39 was a project of a Polish light fighter with a mixed structure, in a low wing configuration, with a landing gear retracted in flight. The drive was to be provided by a single de Havilland engine Gipsy Twelve or PZL Foka or Ranger V-770S. These engines had the power from 350 to 450 HP. The prototype was never tested. The armament was to consist of two 7.92 mm PWU wz.33 machine guns.

Work on PZL.39 began in 1935. It was supposed to be a machine designed to operate at low altitudes, with considerable maneuverability and maneuverability. Initially, it was planned to use an entirely wooden structure, but later this changed to a mixed structure. Similar changes also concerned the power unit. In 1936, along with the transfer of works to the Lublin Aircraft Factory, the designation of the aircraft was also changed to - LWS-4. In the same year, the Polish aviation command expressed interest in the project, but it quickly withdrew from it, in favor of more prospective machines. In mid-1937, the project was abandoned.