FSB called the main versions of the Tu-154 crash in the Black Sea
The Federal Security Service of Russia issued a press release about the collapse of the military Tu-154 in the Black Sea. According to him, there are no terrorist attacks among the main working versions of the plane crash, Interfax reports. The main versions, according to the FSB, are “entering the engine of foreign objects, poor -quality fuel that entailed power loss and engine failure, piloting error, and technical malfunction of the aircraft”.