They do n't have much to do Air France Flight 447 plunged into southern Atlantic Ocean killing all 228 people in 2009 . Data on instruments , air speed and altitude seen as determining factor . Expert : Search for missing ` ` unprecedented in terms of sea and sub - sea terrain ''
Air France Flight 447 plunged into southern Atlantic Ocean killing all 228 people in 2009 . Data on instruments , air speed and altitude seen as determining factor . Expert : Search for missing ` ` unprecedented in terms of sea and sub - sea terrain ''