26.3.1973 in 14.30 crashed MiG-21MA no 1115 with the pilot lieutenant. George Podneckým. In the implementation of the loop the pilot couldn't fly, and the aircraft went into a tailspin. The Pilot had to eject.
Source:
http://www.pavpec.info/4slp.html.
Source:
http://www.pavpec.info/4slp.html.