One of the engines of the su-30SM of Russian air force, the victim crash in the Syrian Arab Republic, before falling very quickly lost traction, informs "Kommersant" referring to a source in the military authorities. according to the publication, issues the plane appeared to practice immediately after takeoff, when the su-30SM has risen, presumably in the 200 meters and instead further climb began suddenly to peck her nose. At this point, According to the source, for some strange reason was a sharp drop in thrust at the 1st of the engines. before the Ministry of defence reported that the cause of the crash of the fighter could be getting birds into the engine. While the Ministry of defense said that the plane no one fired.