Diana Sailplanes Diana 2
 The SZD-56 Diana is a 15 metre class glider originally designed by Bogumił Bereś at PZL-Bielsko. However PZL Bielsko went bankrupt before it could be put into serial production. The rights to the design were taken over by a new entity Diana Sailplanes which developed the design further and called it the Diana 2. By 2011 the aircraft was being produced by Design Office Bogumil Beres. This glider first flew on 12 January 2005.