A preliminary design was made by Major Wacław Makowski, a construction sketches by Augustyn Bobek-Zdaniewski.

The prototype, with markings SP-ADB, took part in the Challenge 1930 international contest in July 1930, flown by Zbigniew Babiński.

Trapezoid single-section wings with rounded tips, two-spar, plywood and canvas covered.

Crew of two, sitting side-by-side between spars, in an open cockpit, fitted with a windshield and dual controls.

Data from Jane's all the World's Aircraft 1931,[3] Poser - PWS - Podlaska Wytwórnia Samolotów  : PWS-50[4]General characteristics Performance