The Americans

tried to Board A plane that crashed in Iran with 176 people on Board had, you return to The Airport , Iranian investigators say.

Ukraine International Airlines Boeing 737-800 went down minutes after takeoff from the Tehran airport on Wednesday, leaving no survivors.

for A first trial found the plane experienced a problem, as The Airport zone was abandoned, and was "On Fire ".

Ukraine said it is the examination of the various possible causes, including an anti-aircraft missile strike was.

On Thursday, Oleksiy Danylov, The Secretary of the Ukrainian security and defense Council, said in a Facebook post (in the Ukraine), that

Mr Danylov said Ukrainian investigators, the wanted in Iran, the search for possible debris from a rocket, on The Site of The Crash . Iran is known to have Russian anti-missile systems.

The Investigation of the experts who worked on The Investigation , Mr. Danylov added.

The Crash came only hours after Iran carried out missile attacks on two air force bases housing U.S. forces in Iraq.

However, there is no evidence that the two events are linked.

in the Midst of tensions, reinforced by the U.S. killing of a top Iranian general Qasem Soleimani on 3. January, has told Iran it will not hand over the recovered black box flight Recorder of Boeing or the US.

Under the global rules of air travel has been involved in the Iran The Right to guide The Investigation , but the manufacturer's are generally.

Iran's Civil Aviation organization (CAOI) chief Ali Abedzadeh, said: "The plane, the left originally in the direction of the West, The Airport zone, turned right after a problem and was on the way back to The Airport at the moment of The Crash . "

Mr Abedzadeh added that witnesses saw the plane "On Fire " before The Crash , and the pilots had to call out of any emergency, before you try to go back to Imam Khomeini airport.

"a number of domestic and foreign flights, which flew in the Iranian space at the same height of 8,000 ft (2,400 m). The issue of missile impact on the aircraft may not be true, in any way," he said.

Mr Abedzadeh said that the first results had been sent, in the Ukraine and in the USA, where Boeing has its headquarters.

He was previously quoted as saying that "terrorism" had played no role in The Crash .

Sweden and Canada also had the results sent, as their state members on Board, he added.

Normally, the US National Transportation Safety Board would play a role in international investigations with U.S.-made Boeings. But the Board must act with the permission and in accordance with the legislation of the country concerned.

In the comments not published by Iran's More-news Agency, Mr. Abedzadeh, said: "We will give The Black box from the manufacturer and The Americans .

"This accident will be investigated by the Iran aviation organization but The Ukrainians may also be present," he added.

Mr Abedzadeh, it was still not clear, to analyze which country would be The Black Boxes - a cockpit voice recorder and flight data recorder.

the Ukrainian President Vladimir Zelensky said earlier that "a thorough and independent investigation is carried out in accordance with International Law ", and he would talk to Iran's leaders to intensify cooperation in The Investigation of The Crash .

Ukraine, the observation is A Day of national mourning on Thursday.

Boeing said it was "ready to help in any way necessary", while Canadian Prime Minister Justin Trudeau said his country expected to play a role in The Investigation and had offered their technical support.

Ukraine International Airlines flight PS752 to Kiev had 167 passengers and nine Ukrainian crew on Board.

The majority of the passengers came from Iran and Canada.

Ukraine Tehran Embassy to say first of all, the debt-to-no damage to the engine but later in The Statement , removes any comment on The Cause of The Accident , which was not examination before a Commission Official .

It was a good view, and when the plane went down near Iran's capital, according to Flightradar24 air travel website. The officials of the airline said, The Crew were experienced.

Among The Victims , 82 Iranians, 63 Canadians, 11 Ukrainians, including all nine members of The Crew , 10 in Sweden, four Afghans, three British and three German, Ukrainian goods, said Foreign Minister Vadym Prystaiko ,. Fifteen of The Dead were children.

But the German government said later: "we currently do not have any knowledge that German citizens among The Victims of the plane crash in Iran".

Iran is the head of emergency operations, said 147 of The Victims were Iranian. That would mean that 65 of The Foreign nationals had two nationalities. The Ukrainian airline gave a Hotline number for more information about the passengers: +38-044-581-50-19.

Mr. Trudeau said the 138 passengers on The Flight were on their way to Canada via Kiev.

"All the people who don't come home to your parents, your friends, your colleagues or your family," he said. "All of them had so much potential, so much life ahead of him".

flight data from the Ukrainian Airlines Boeing 737-800 is openly available online. It shows that the plane rose into the rule after the capture of Tehran.

He reached nearly 8,000 ft before the plane disappears, the data suddenly.

This is unusual and would suggest some kind of catastrophic incident on Board the aircraft. We have no evidence at this stage to tell us what The Cause of The Incident .

According to a former air crash investigator, any suggestion of damage to the engine feels premature. This possibility can not be ruled out at this early stage, but a transport aircraft such as the Boeing 737-800 is designed to keep flying, if there is damage to the motor.

Plus, if there is a fault, then we would normally expect that The Flight data, in order to show climb, the aircraft always less steep.

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