An Australian team is studying underwater detection techniques to help find the wreckage . But it 's not certain if there was an impact we would detect it , '' Prior said . Early in the search , the U.N. said it had not detected any explosions or crashes from its surface . ` ` It 's not certain if there was an impact we would detect it , '' said seismic acoustic analyst . An re - examination of data relating to Air France 447 could not detect crash debris from under water .
An Australian team is studying underwater detection techniques to help find the wreckage . Early in the search , the U.N. said it had not detected any explosions or crashes from its surface . ` ` It 's not certain if there was an impact we would detect it , '' said seismic acoustic analyst . An re - examination of data relating to Air France 447 could not detect crash debris from under water .