The demolition came at a time when Tehran was on alert for a possible US attack in retaliation for the Iranian bombardment of a base in Iraq with US troops.

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Tehran.- Iran announced this Sunday that « a human error« when proceeding to the alignment of one of the units of the air defense system was the trigger for the knock down last January the ukrainian plane, whose 176 occupants died in the accident.

According to the latest report of the Civil Aviation Organization of Iran, the investigation has concluded that this unit was not restored to the north direction after its geographic location change, which produced « an error of 107 degrees ».

« The identified objects were observed at a magnification equivalent to 107 degrees by the operator of the air defense system, » explains the text, which led to the identification of the plane as a threat and the firing of two missiles to shoot it down.

This was followed by « a chain of events »: « faulty communication » between the system operator and the coordination center, « an incorrect identification of the object » and a failure to follow the procedures for launching the missiles.

The Civil Aviation Organization indicated that « the system operator classified the detected target as a threat » and that this was fostered by « its ignorance of the 107 degree error ».

Regarding procedures, the report stipulates that the operator was not authorized to fire without having previously received the approval of the Coordination Center, which never issued a similar order.

The impact of the first missile against the plane caused a fire in the aircraft, a Boeing 737, which ended up crashing to the ground, at which time an explosion was registered.

Ukraine International Airlines (UIA) Flight 752 was shot down on January 8 after being mistaken for a missile shortly after taking off from Tehran airport bound for Kiev.

He knock down It came at a time when Tehran was on alert for a possible US attack in retaliation for the Iranian bombardment of a base in Iraq by US troops.

Of the 176 deceased occupants, according to the airline’s data, 82 were Iranians, 63 Canadians, eleven Ukrainians (two passengers and nine crew), ten Swedes, four Afghans, three Germans and three British, although the Iranian authorities raised to 146 their nationals by not recognizing dual nationality.

Iranian Foreign Minister Mohamad Yavad Zarif announced last month that the plane’s flight data recorder will be released to France for reading and that Iran will pay compensation for the tragedy.