Terrorism has not been ruled out as a cause of the crash on May 19, when the Airbus A320 operating Flight MS804 from Paris to Cairo went down killing all 66 people on board.
The two black boxes from the aircraft were retrieved damaged from the bottom of the Mediterranean and sent to Paris, where the electronic board from the flight recorder was repaired yesterday.
The file was "transferred to Cairo for decoding, validating and studying" at the civil aviation ministry, said the Egyptian Aircraft Accident Investigation Committee.
The repair work of the cockpit voice recorder, the second black box, had also begun.
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"A meeting was also held today between the investigation committee members and the accredited French and American representatives to evaluate the work accomplished up till today," said the commission.
Fifteen of the passengers on board the doomed aircraft were from France.
It was also carrying 40 Egyptians, two Iraqis, two Canadians and one passenger each from Algeria, Belgium, Britain, Chad, Portugal, Saudi Arabia and Sudan.
Their counterparts in Egypt confirmed the aircraft had made a 90-degree left turn followed by a 360-degree turn to the right before hitting the sea.
French judges are also investigating the crash.
Prosecutors had previously opened a preliminary investigation -- a normal procedure when French citizens are involved -- and have handed their findings to judges for a "manslaughter" probe.