Plane crash victims' families file complaint against Jeju Air CEOThe Jeju Air plane belly-landed at Muan International Airport without its landing gear deployed on 29 DecemberNearly five months on, authorities are still studying what may have caused the plane to crash-land at Muan International Airport and then burst into flames. The 72 bereaved relatives are calling for a more thorough investigation into the crash, which killed 179 of the 181 people on board - making it the deadliest plane crash on South Korean soil. Some families of those killed in a Jeju Air plane crash last December have filed a criminal complaint against 15 people, including South Korea's transport minister and the airline's CEO, for professional negligence. They lost their families in a plane crash - then came the online hateThe police had already opened a criminal investigation before this latest complaint, and barred Jeju Air CEO Kim E-bae from leaving the country, but no one has been indicted over the incident. These included suggestions that families were "thrilled" to receive compensation from authorities, or that they were "fake victims".