An initial search found wreckage and bodies.
Now, nearly two years after an Air France plane plunged into the Atlantic, investigators may be closer to locating its all-important black boxes
They have found more parts of the Paris-bound aircraft that went down in a storm en route from Rio de Janeiro in June 2009, killing all 228 people on board.
In this fourth such search operation, it is hoped the flight recorders, and answers to why the Airbus A330 crashed, could be within reach.
Speculation has largely focused on the plane’s speed sensors.
Air France and Airbus have both been placed under formal investigation as part of a French criminal inquiry into the causes of the crash.