Three brothers, Edward, Paul and Wojciech Sopora set up an aircraft-building workshop in 1923 at Chorzów, calling it the Pierwsza Śląska Fabryka Samolotów (First Silesian Aircraft Factory).

[1] Its wood-framed, thin section wing was in two parts joined to the upper fuselage longerons and was fabric covered.

The mainwheels were on a single axle which was mounted on two transverse tubes joining the apexes of two V-struts from the lower fuselage longerons.

[1] The S-3 was completed by October 1923 and in early November it made its first flight, piloted by Klosek, from the army field at Panewniki near Ligota.

The S-3 continued to make short flights into 1924 but after a landing accident the Soporas decided that its Haake engine should be removed to power their next design, the Silesia S-4 and the S-3 was abandoned.