The aircraft was designed by Zbysław Ciołkosz for an order of the Ministry of Communication for a fast plane with higher performance than the PWS-24 airliner, for carrying mail or four passengers.

Its one-piece wing, tapered with elliptical tips in plan, was built around two wooden box spars and covered with stressed plywood.

[1] The single pilot was housed in a cockpit ahead of the wing, well glazed and with a pointed front windshield.

Between the doors the underside of the wing was cut away, increasing the headroom locally by 152 mm (6 in) for ease of access.

Each mainwheel was mounted on a V-form, steel tube strut hinged to the lower fuselage, with long, vertical shock absorber legs to the wings.