Japan Airlines (JAL), Asia's biggest air carrier, is due to file for bankruptcy protection. JAL, which has 16.5 billion dollar of debts, is expected to make the move after a board meeting later today. JAL shares fell to an all-time low yesterday, valuing the firm at just 150 million dollar, roughly the price of a new jumbo jet. The Japanese government says flights will continue as normal as JAL begins restructuring under the supervision of a state-backed turnaround organisation. But a third of JAL's workforce – more than 15,000 people – is expected to lose their jobs.<br/>