Egyptian submarines search for black boxes of crashed EgyptAir plane

Egyptian President Abdel-Fattah el-Sissi warned the media on Sunday against speculating about what brought down EgyptAir flight 804, and said all scenarios are being considered.

Teams searching for the black box flight recorders of a missing EgyptAir jet that crashed with 66 people aboard face technical constraints that aviation experts increasingly blame on a slow regulatory response to earlier disasters.

He went on to say that a submarine operated by Egypt's Petroleum Ministry was now moving towards the crash site in hopes of recovering the plane's two black boxes.

French Foreign Minister Jean-Marc Ayrault told passengers' families Saturday that "no theory" had been ruled out.

The Islamic State group has claimed responsibility for that attack within hours, but there has been no claim linked to the EgyptAir crash.

Egypt is leading a multi-nation effort to search for the plane's black boxes and other clues that could help explain its sudden plunge into the sea.

The first images of debris from EgyptAir flight 804 have emerged, and investigators confirm smoke was detected in the plane's nose before it crashed.

"The aircraft was on its fifth flight that day so it is at least possible that it might have picked up hold goods destined for Egypt in another country with less comprehensive screening standards", Mr Smith said. The first message showed that smoke had been detected in a lavatory near the front of the plane and that two windows in the cockpit had problems. That flight data indicated smoke alerts occurred near the cockpit minutes before the crash. That's consistent with what would happen if a plane broke apart and the radars, which reflect radio waves off of metal pieces, tracked the debris, said John Cox, a former airline pilot and accident investigator who is president of Safety Operating Systems, an aviation consulting firm.

According to Reuters, XL Catlin was the lead underwriter and Marsh the broker for the plane which vanished from radar over the Mediterranean on Thursday.

Authorities say the plane lurched left, then right, spun all the way around and plummeted 38,000 feet into the sea - never issuing a distress call. Egypt said its navy had found human remains, wreckage and the personal belongings of passengers floating in the Mediterranean about 290 km (180 miles) north of Alexandria.

While authorities in Paris would have given the plane at least a cursory security sweep before allowing passengers to board, there are many places on an aircraft where a bomb could be hidden, he said.

Agency spokesman Sebastien Barthe said the messages "generally mean the start of a fire" but added: "We are drawing no conclusions from this".

"The investigation process involves multiple technical specialists, representing many parties, multiple national agencies and global governments", the committee pointed out, noting the investigation process is governed by the Egyptian law and the regulations of the worldwide Civil Aviation Organization.

Egyptair said officials met family members and told them the process of gathering body parts and information would take time, while DNA testing to identify victims would require weeks. They released photos of the wreckage on Saturday.

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