One of two black boxes recovered from the crash site of EgyptAir flight MS804 has been fully repaired, Egyptian investigators said Tuesday, opening the door to clues as to why the Airbus A320 descended into the Mediterranean last month.
According to a statement, investigators also said the plane's cockpit voice recorder would also be worked on in the short term.
The announcement came a day after French authorities said they had opened a manslaughter inquiry into the crash, saying there was no evidence so far to connect it to "terrorism".
Prosecutor's office spokesman Agnes Thibault-Lecuivre told the Associated Press news agency the inquiry was launched as an accident investigation. The reason for the crash is still unclear.
The two black box recorders were found two weeks ago, but were too damaged to extract information on what caused the passenger jet to go down.
Technicians at France's air accident investigation agency, the BEA, will attempt to remove salt damage and fix them, and then send them back to Egypt for analysis.
MOHAMED ABD EL GHANY REUTERS People light candles during a candlelight vigil for the victims of Egypt Air flight 804
It's hoped they will provide answers as to why the plane plunged into the Mediterranean while en route from Paris to Cairo.
The repaired black boxes will be returned to Cairo for analysis in Egypt's aviation ministry laboratories, the committee previously said.
Egyptian investigators have already determined the May the 19th flight made a sharp left turn, followed by a 360-degree sweep to the right before plunging into the sea.
The pilots sent no distress call, and no militant group has claimed responsibility.
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