Tehran not willing to give the United States or the organization of the Boeing black boxes of the aircraft "Ukraine International airlines" that crashed in Iran, said the head of civil aviation of Iran Ali Abedzadeh. "At this point in time it is unknown which country will receive the black box to decrypt ", - quotes its news Agency Mehr. According to Abedzadeh, disaster was bound to investigate the state within which the tragedy occurred. At the same time Ukraine will have the opportunity to participate in clarifying the circumstances of the incident, he noted. Boeing 737-800 "Ukraine International airlines" crashed shortly after taking off from the airport in southern Tehran on Wednesday morning. The aircraft was headed for Kiev. In the cabin of the ship was about 180 people, all of them lost their lives. On inaccurate data, the plane crashed due to catastrophic failure of the engine. <span style="color:darkgray