As investigators set to work unpicking the cause of Sunday’s devastating plane crash in South Korea, the black boxes carried on the plane will be of prime importance. One hundred and 79 people out of the 181 onboard died in the disaster, with the victims aged from three to 78. The Korean airline’s chief executive, Kim E-bae, said he wanted “to bow my head and apologise”, according to a statement on the company’s website, adding it was “difficult to determine the cause of the accident”. Yet experts will be hoping the flight recorders might offer crucial insights. Often called black