It sets standards for civil aviation and airline safety. A team of International Civil Aviation Organization experts arrived in Teheran yesterday , and is expected to remain in Iran for a week . The ICAO is a specialized branch of the United Nations and is based in Montreal . They are in Iran at the request of the Iranian government . The ICAO will start its probe in Teheran and then will go on to other sites critical to the investigation . The United States delegate to the United Nations said that his country would help the investigation in any way it could , but did not know if the team would be allowed to go aboard the aircraft .
A team of International Civil Aviation Organization experts arrived in Teheran yesterday , and is expected to remain in Iran for a week . The ICAO is a specialized branch of the United Nations and is based in Montreal . They are in Iran at the request of the Iranian government . The ICAO will start its probe in Teheran and then will go on to other sites critical to the investigation . The United States delegate to the United Nations said that his country would help the investigation in any way it could , but did not know if the team would be allowed to go aboard the aircraft .