EXPLAINER: What is known about the China Eastern plane crash

The crash of a Boeing 737-800 passenger jet in China’s southwest started a fire big enough to be seen from space and forced rescuers to search a rugged, remote mountainside

BEIJING -- The crash of a Boeing 737-800 passenger jet in China’s southwest started a fire big enough to be seen from space and forced rescuers to search a rugged, remote mountainside.

One day after the China Eastern Airlines flight plunged from the sky, there are more questions than answers.

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WHAT CAUSED THE CRASH?