Investigators fail to find Air France black box

PARIS: Investigators have not yet found flight recorders of an Air France airliner that crashed this month, France���s air accident authority said on Tuesday after a report that signals from the recorders had been picked up.

The website of France���s Le Monde daily reported that signals had been detected and a mini submarine had been launched to try to locate the ���black box��� recorders that could contain vital clues to explain the June 1 crash, in which 228 people died.