 However it never was put into production, despite the fact that it passed the national approval test with a very good rating.The main reason for this was the order from the USSR to stop work on any national aviation project.In January 1948, Tadeusz Chyliński began work at the Technical Institute of Aviation ("Instytut Techniczny Lotnictwa"), renamed on April 1 of that same year as the National Aviation Institute ("Główny Instytut Lotnictwa").