A French nuclear submarine reached the crash zone of Air France Flight 447 yesterday to join the search for the plane's black boxes, which may help determine what brought the Airbus down in the sea off Brazil with 228 people on board.
The attack sub Emeraude plans to trawl 35 square kilometres a day, using sonar to try to pick up the boxes' acoustic beacons or pingers, French armed forces spokesman Christophe Prazuck said yesterday.