Details about the Boeing 777-200ER's course and eventual disappearance are slowly developing, but authorities and military personnel from several countries have been joined by volunteers scanning satellite images in a quest to find the plane.
Assuming the plane crashed over the ocean, how long could survivors continue to live in the open seas? [5 Real Hazards of Air Travel]
Surviving a Plane Crash
The first concern of a crash over the open ocean is, of course, surviving the plane crash itself. And the odds of surviving are surprisingly good.