Su-25 that crashed outside Vladivostok shot down by wingman - source VLADIVOSTOK. March 26 (Interfax-AVN) - A Sukhoi Su-25 attack plane, which crashed outside Vladivostok last week, was shot down by a missile accidentally fired by a wingman, a source from the commission investigating the incident told Interfax on Wednesday. "The theory that the crash was caused by a mechanical fault has not been confirmed. It has been discovered that the Su-25 attack plane was shot down by a missile fired by a wingman," he said. It was reported earlier that the Su-25 plane exploded in flight, and its pilot failed to eject and was killed. The incident took place 143 km away from Vladivostok in the Chernigovka garrison. An oversight commission was appointed to investigate the causes of the crash, and Air Force Commander Col. Gen. Alexander Zelin issued an order restricting all Su-25 flights until the investigation is over.