that continues to captivate the world. authorities know the plane intentionally veered off course but say they don t know why the boeing 777 with 239 people on board made a dramatic turn over the sea between malaysia and vietnam. and they don t know exactly where the plane s journey ended. using satellite data search officials calculated the plane went down in southern indian ocean. most recently been combing an area of ocean floor 1,000 miles west of perth, australia, 2,700 miles from where this debris was found. now investigators and scientists s are cal cue lagt if pieceku calculating. it is definitely possible it could have drifted that far considering the time in the water. reporter: experts stressed other planes have crashed in the area this piece of wreckage could be from one of them. contacted by cnn boeing would say it is continuing to provide technical expertise to the search teams. brian todd cnn, washington.