An Australian university is studying underwater listening devices to help find the jet . Score: 7 `` It 's not certain if there was an impact we would detect it , '' says seismic acoustic analyst . An re-examination of data relating to Air France 447 could not detect crash signals from under water .
An Australian university is studying underwater listening devices to help find the jet . Early in the search , the U.N. said it had not detected any explosions or crashes from its sensors . `` It 's not certain if there was an impact we would detect it , '' says seismic acoustic analyst . An re-examination of data relating to Air France 447 could not detect crash signals from under water .