Analysis of information sources in references of the Wikipedia article "수호이 Su-35S" in Korean language version.
an Su-35 was recorded attempting to gun down a Ukrainian Mi-14 utility helicopter over Odessa Bay, only to miss. Subsequently, it downed the chopper with a missile, killing a high-ranking naval officer.
L-39 jet trainer...MiG-29 of 40th TAB piloted by Lt. Col. Yerko Vaycheslav Vladimirvoich...MiG-29 of 40th TAB piloted by Vladimir Kokhansky...Su-27 lost on February 28 on a defensive mission over Koprivnitsky battling Russian fighters...MiG-29 of Maj. Oleksandr Brynzhal, KIA after shot down over Kyiv Oblast in duel...MiG-29 on March 13 downed over Chernihiv...MiG-29 on March 23 piloted by Maj. Dmitry Chumachenko
an Su-35 was recorded attempting to gun down a Ukrainian Mi-14 utility helicopter over Odessa Bay, only to miss. Subsequently, it downed the chopper with a missile, killing a high-ranking naval officer.
Also referred to as the Su-35S 'Super Flanker' (and sometimes the Su-35C), the Sukhoi was originally conceived purely for export sales, with China and Venezuela expressing interest.