Even after the finding of the two “black boxes," it may be a long time before investigators figure out what caused a China Eastern Airlines Boeing 737-800 to nosedive into the ground last week, killing all 132 people aboard.
Searchers found the first black box two days after the March 21 crash and the second one on Sunday, six days later. Experts say it could take weeks or months to analyze their contents and start to find answers.
