French investigators trying to find out why an Air France plane crashed in the Atlantic say they believe it broke up on contact with water, not in the air.
They also found that the plane’s speed sensors had been “a factor but not the cause” of the crash.
All 228 people on the plane were killed when it plunged into the ocean en route from Rio de Janeiro to Paris on 1 June.
Teams looking for the plane’s flight data recorders will continue operations for another 10 days.
Alain Bouillard, of France’s BEA accident investigation agency, said the crash had been an extremely difficult one to understand.
“Between the surface of the water and 35,000ft [10,700m], we don’t know what happened,” Mr Bouillard said. “In the absence of the flight recorders, it is extremely difficult to draw conclusions.”
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