US Navy aids Airbus black box hunt
A specialist US underwater team has been brought in to try to locate the missing flight recorders from the lost Air France flight 447.
The Airbus went down in a remote and deep part of the Atlantic hundreds of miles off the Brazilian coast.
Search teams are struggling to find the "black box" flight recorders which will broadcast a locator signal for up to 30 days.
The US Navy team uses special underwater listening devices which can detect emergency beacons to a depth of 20,000 feet.
Meanwhile, Brazilian and French military ships, which have so far recovered 17 bodies and large amounts of plane wreckage from the sea, resumed their search amid the floating debris.
What caused the Airbus A330 to crash on May 31 with 228 people on board will remain a mystery unless searchers can locate the plane's flight data and voice recorders.
France is leading the investigation into the cause of the crash, while Brazilian officials are focusing on the recovery of victims and plane wreckage.
There is "no more doubt" that the wreckage is from Air France Flight 447, the Brazilian Air Force said.
Flight 447 disappeared and probably broke up in midair in turbulent weather on May 31 en route from Rio de Janeiro to Paris.
The search is focusing on a zone of several hundred square miles 400 miles north-east of the Fernando de Noronha islands off Brazil's northern coast.