Sergei S. is from Tver, served in the Far East, and ended up in Ivanovo.

He left behind a twin brother, who was also in aviation, but left of his own free will. On the afternoon of March 12, an Il-76 military transport aircraft crashed in the Ivanovo region. The cause of the crash was the fire of one of the engines during takeoff. There were pilots from the Tver region and the Orenburg region on board.