Pratt & Whitney Kalisz was established in July 1992 as a Joint-Venture between Pratt & Whitney Canada and WSK PZL Kalisz. In early 1996 - PWC bought out all the shares and became the sole PWK shareholder. In 2003 PWK and Aerotech merged under the name of Pratt & Whitney Kalisz, 100% controlled by Pratt & Whitney Canada.