Mystery continues as sub looks for jet black box

Paris: A French submarine with advanced sonar equipment is due to begin searching on Wednesday for the flight recorders of the Air France airliner which crashed into the Atlantic Ocean last week, the French military said. The nuclear-powered submarine Emeraude was dispatched to the area last week to help recover the "black box" flight recorders, which may contain clues to explain the disaster and which are believed to lie deep on the Atlantic ocean floor. "The Emeraude will begin its patrol during the morning in an initial search zone of 36 km by 36," Christophe Prazuck, a spokesman for the French military said. He said the search zone would be changed daily. If the recorders are found, unmanned robot submarines on board the Pourquoi Pas, a French exploration and survey ship which has also been deployed to the area, could be used to bring them in.