A Delta Air Lines flight crew that dumped fuel on several Los Angeles area schools before making an emergency landing, causing minor injuries to schoolchildren, did not inform air traffic controllers it planned to do so, the Federal Aviation Administration (FAA) said Wednesday.

Crash investigators from Canada have visited the site of an Iranian plane disaster in which 57 Canadians died and will examine the wreckage later on Wednesday, Transport Minister Marc Garneau said.

The Canada-based International Civil Aviation Organization (ICAO) has accepted an invitation from the Iranian government and will send experts to join a probe into the downing of a Ukrainian passenger plane which killed all 176 people on board.

Iran's Judiciary spokesman said here Tuesday that the Islamic republic has arrested some people related to the crash of a recent Ukrainian passenger plane over Tehran's sky, official IRNA news agency reported.

European airlines should avoid Iranian airspace until further notice, the EU Aviation Safety Agency (EASA) said on Saturday following Iran's admission that its armed forces inadvertently shot down a Ukrainian airliner earlier in the week.

The Philippine airport authority on Sunday suspended flights at Manila's international airport after a volcano in nearby Batangas province spewed a giant plume of ash.

Ukraine International Airlines Vice President Igor Sosnovsky accused Iran of irresponsibility for not closing the airport after the Iranian attacks on US forces in Iraq, reported Interfax Ukraine news agency on Saturday.

The crash of a Ukrainian passenger jet was a tragedy arising from the supercharged tensions of the Middle East and could have been avoided, an expert said following Iran's admission that it "unintentionally" shot down the jet with missiles.

Consistent with the provisions contained in Annex 13 to the Chicago Convention (Aircraft Accident and Incident Investigation), the International Civil Aviation Organization (ICAO) has received official notification and a preliminary accident report from the Islamic Republic of Iran surrounding the loss of Ukraine International Airlines Flight PS-752 near Tehran.

A Ukrainian airliner crashed soon after taking off from Tehran's Imam Khomeini airport on Wednesday, killing all 176 people aboard, Iran's state television and Ukraine's leaders said.