CNN Erin Burnett OutFront March 26, 2014 23:26:00
Into the water? martin savidge is out front with the final clue. martin we use this word ping. you know, ate pretty complicated thing what we're talking about. this could be incredibly significant this use of the word partial ping. >> reporter: right. as we know there were at least six pings that came from the aircraft during its flight that have been analysised by the folks at inmarsat that came up with this fact that the plane went on this southern trajectory and able to discern this plane went into the southern indian ocean. if you find that last ping it's believed to have been transmitted ...