How the black boxes of crashed Chinese jet will be handled
Chinese authorities on Sunday recovered the second black box from a China Eastern Airlines jet that plunged into a mountainside last Monday with 132 people on board, state media reported.
The recovery of the flight data recorder (FDR) from the crash site follows the retrieval of the cockpit voice recorder (CVR) on Wednesday.
This is how the black box readout process works.
What are black boxes?
They are not actually black but high-visibility orange. Experts disagree how the nickname originated but it has become synonymous with the quest for answers when planes crash.
Many historians attribute their invention to Australian scientist David Warren in the 1950s. They are mandatory.
