The su-27, based on inaccurate data, fell into the Black sea while conducting routine flight, said the Ministry of defence. It is noted that in 50 kilometers from Feodosiya aircraft has filed an emergency signal. in the operation to rescue the pilot involved An-26, the rotary-wing machine Mi-8 anti-submarine ship, as well as civilian vessels which were in the vicinity of the event. "Search the pilot in the area of the operations have been hindered by difficult weather conditions ", - added in the Ministry of defence. <span style="color:darkgray