In 1951 a third national aerospace factory, WSK-Świdnik, was built in Świdnik, and in 1957 it was renamed to WSK PZL-Świdnik. Since 1956 it has become one of the world's major helicopter manufacturers, producing helicopters under the Soviet licence, starting with the SM-1 (Mil Mi-1). Świdnik was the main producer of the Mi-1 and exclusive producer of the widely used in the world Mil Mi-2. Since the late 1980s, Świdnik has been producing a Polish-designed medium helicopter PZL W-3 Sokół. It also produces a light helicopter, the PZL SW-4 Puszczyk. After 1991 the state factory became a state-owned corporation (WSK "PZL-Świdnik" SA). It also produced the Pirat, PW-5 and PW-6 gliders and cooperates widely with other nations' manufacturers, e.g., in the manufacture of Agusta A109 fuselages.
From 1954 until 1980 the WSK PZL-Świdnik was also a manufacturer of motorcycles, branded as the WSK. Some 2,000,000 of motorcycles of the WSK M06 125 cc and WSK M21 175 cc families were made in that period.