Paris ( CNN ) -- A French magistrate is investigating Airbus for involuntary manslaughter in connection with the mysterious 2009 crash of Air France Flight 447 into the southern Atlantic Ocean , according to the airline manufacturer and a court spokeswoman . Judge Sylvie Zimmerman is presiding over the inquiry into the Airbus-made plane , court spokeswoman Sylvie Polack told CNN on Thursday . The plane fell into the sea while traveling from Rio de Janeiro to Paris , killing all 228 people aboard . Thomas Enders , CEO of Airbus , disagreed with the decision to commence the investigation , he said in a statement . `` On behalf of Airbus , I have noted the absence of facts supporting this step and stated our strong disagreement , '' Enders said . `` Airbus maintains that the focus should be on finding the cause of this accident and making sure it can never happen again . Airbus will continue to support the investigation , including the continued search for the flight recorders , which is the only sure way to know the truth , '' Enders said . Investigators have not yet established what caused the crash , and large parts of the plane -- including both flight recorders -- have never been found , despite an extensive search operation that included a French navy submarine . The plane went down in stormy weather , and most of the bodies were never recovered . Studies of the debris and bodies that were found led France 's air accident investigation agency , the BEA , to conclude the plane hit the water belly first , essentially intact . Oxygen masks were not deployed , indicating that the cabin did not depressurize , the BEA revealed in a 2009 report . Automated messages sent from the plane in the minutes before the crash showed there were problems measuring air speed , the investigators said , though they said that alone was not enough to cause the disaster . The area where the plane went down is far out in the Atlantic -- two to four days by ship from the nearest ports in Brazil or Senegal in West Africa . The rough underwater terrain includes mountains and valleys , the BEA said . CNN 's Michael Martinez contributed from Los Angeles .
Air France Flight 447 mysteriously crashed in the Atlantic Ocean in France . All 228 people aboard were killed . Plane manufacturer Airbus is now being investigated by a French magistrate .