On 14th July 2004 in Warsaw died Tadeusz Sołtyk – Polish engineer, aerial constructor, and professor of technical science. Sołtysik was born in 1909 in Radom. He graduated from the Warsaw University of Technology and then worked as a cinstructor in State Aviation Works. He took part in developing PZL.23 Karaś aircraft and production preparation of PZL.46 Sum. When the world started he replaced the main cinstructor – Stanisław Prauss. He fought in the September Campaign, including the battle of Kock. In 1944 he established construction office in Lublin – Aerial Experimental Workshops and became its main constructor. Than he worked in Warsaw Institute of Aviation. He was ordered for his work with the Order of Polonia Restituta.