The PZL State Aviation Works in Warsaw took over the design, searching for an aircraft to participate in a contest for a trainer aircraft, announced by the LOPP paramilitary organization (Air- and Anti-Gas Defense League).

The first prototype was rebuilt this way, using a 94 hp Cirrus III engine, receiving the markings: SP-AEE.

It had a 120 hp Gipsy II engine, longer wings and fuselage, larger cockpit openings, changed tail and landing gear.

It took part in a contest for the basic trainer aircraft for the Polish Air Force, but it was beaten by the RWD-8.

Only Ignacy Giedgowd completed the contest flying the PZL.5 SP-ACW, on the 33rd place (for 35 classified and 60 starting crews).

[4] Bolesław Orliński had to withdraw in Spain due to engine failure, flying SP-ACX.

[1] A total of 11 PZL-5as and the prototype were bought by local aeroclubs in Warsaw, Katowice, Kraków, Poznań and Vilnius and intensively used for sports, training and touring.

[1] In 1932, SP-ACX was modified to glider towing and fitted with additional fuel tanks, for 8 hours of flight.