sentences:  Possibly also the other one was used in this Aeroclub.In 1939 Jerzy Dąbrowski made a preliminary design of a fast fighter plane PZL.55, being a far development of the PZL.26's construction, powered by Hispano-Suiza 1100 hp engine, but it was not realized due to World War II.Metal construction low-wing monoplane, conventional in layout.