On 10th September 1939 died sublieutennt Jan Kardasz. He was born on 20th June 1916. Kardasz graduated from Polish Air Force Academy in Dęblin and was promoted to observing lieutenant on 15th October 1938. On 10th September 1939 he took off from the airport in Zielonka with corporal S. Oleksiński and M. Majewski in PZL P-23B Karaś. Their aim was to fly to Siennica near Mińsk Mazowiecki. The crew never got to their destination. It was established that the aircraft was attacked by German fighters and downed above Michałówka (near Miłosny). The whole crew died and they were buried in a mass grave in Wiązowna.