Officials tell CNN the search for the missing Malaysia Airlines flight 370 is now extending west into the Indian Ocean.
The shift comes after new information suggests the mystery flight remained in the air several hours after disappearing from radar.
If the plane did go down in the Indian Ocean, recovering the wreckage could be a difficult task.
It took nearly two weeks to discover the block boxes after TWA Flight 800 crashed off the coast of Long Island in 1996.
It was four years before the investigation was complete.
Suzanne Malveaux reports it took even longer to recover parts of the plane.