board of directors of the Aviation Institute and from February 1959 a member of the College of the Institute. Under his leadership, the main specialists of the strength of aircraft structures of the Aviation Institute were educated. All airplanes, helicopters, and wind gliders for the aviation business built during the 1950s and 60s in the 20th century were checked and tested under his directions. From 1948 until 1952, these were tests of strength of construction for aviation equipment such as CSS-10, CSS-11, CSS-12, LWD Junak 2, as well as elements of the helicopter BŻ-1 GIL and gliders Sęp, Jastrząb, and Jaskółka. From 1952 to 1961 the strength tests of jet aircraft: Lim-1 (licence-built MiG-15), Lim-2 (MiG-15bis), Lim-5 (MiG-17), and TS-11 "Iskra" as well as piston aircraft: CSS-13, Junak-3, Li-2, TS-8 Bies, Jak-12M, Jak-12A, PZL M-2, also elements of the helicopter BŻ-4 Żuk. By this time, Chyliński was a director of the Department of Materials Strength. From 1962 until 1965, he was testing the strength of the airplane PZL-104 Wilga, gliders Kobuz, Foka, and Kormoran and also diesel engine shafts and underwater airfoil of the hydrofoil craft "Gryf". Furthermore, under his directions endurance tests were conducted of the wings of the glider "Mucha-100", the ferruling of the wings on the PZL MD-12, shafts and connecting rods of the airplane engine WN3 and the grinder of the rotor blade of the helicopter SM-1 (Mil Mi-1). In March 1956, his project "Kawka" received recognition in the contest sponsored by the League of Soldiers Friends (LPZ) for a single-person training glider. On 1960-11-21, he was asked by the Minister of Transportation to fill the position of the head of the Commission of Civil Flight Regulations at the Department of Civil Aviation of the Ministry of Transportation. In 1962, he took part in taking the "Vickers Viscount" planes from England into service with LOT Polish Airlines. On 1964-01-01, he was offered the position of an independent researcher, while working at the director of the Center of Special Constructions (for example, rockets) and the director of the Problem Group. In 1964, he created an introductory project of a 12-location multifunction, short take-off and landing airplane, TC-Borsuk that was powered by two turboprop engines (as the follower Antonov An-2 and a similar class that was put into production in the 1970s licensed Russian An-28) and in 1969 he modified the An-2 by increasing the area of the