The flight data recorder of crashed EgyptAir flight MS804 has been repaired, Egyptian investigators said in a statement on Monday, putting them one step closer to explaining the cause of the crash, Reuters reports. Investigators added that work on the cockpit voice recorder would begin “within hours.” Earlier on Monday, the Paris prosecutor’s office opened a manslaughter investigation into the crash, ruling out terrorism as a possible cause at this stage, the prosecutor’s office told Reuters. The plane’s black box memory chips were sent to France for repair. Debris from the aircraft was brought to Cairo airport on Monday, “where investigators will try to reassemble part of the plane’s frame in search of additional clues that may help explain the crash,” a source on the investigation committee said.