Investigators in South Korea have extracted data from one of two “black boxes” retrieved from a Jeju Air plane that crashed shortly after landing on Sunday, killing all but two of the 181 people aboard. The country’s deputy minister for civil aviation, Joo Jong-wan, said initial data had been retrieved from the Boeing 737-800’s cockpit voice recorder, adding that the contents were being converted into audio format. Authorities are hoping the voice recorder, along with a second black box containing the flight data recorder, will provide crucial clues about events leading up to the pilot’s attempt to land after the