An airport worker who died while being given a lift from a colleague could have had his safety belt buckled into the wrong hook, the Coroner's Court heard yesterday. Luk Ka-wang, 32, a goods loading worker, was thrown off a vehicle fitted with a conveyor belt while riding with fellow worker Ma Chan-fai, 40, at the old Kai Tak airport landing area on May 28 last year. Luk fell into a coma and did not recover from a brain operation. He died the following day at Queen Elizabeth Hospital from skull injuries and a brain haemorrhage. Government forensic scientist Wong Ping-wong told Coroner Paul Kelly the loader had a safety belt design which was not up to standard. The court heard there were two hooks for the belt - one to adjust its length and the other to secure it. Luk could have buckled into the adjustment hook and believed his belt was securely fastened, Mr Wong said. Mr Ma said he saw Luk make a gesture of fastening the seat belt but was not sure if he had buckled into the correct hook. 'When the loader approached the give-way sign, I reduced the speed a little and then turned right. He then slipped out and hit the concrete ground head-first,' Mr Ma said. 'Luk had been a loader driver for more than two years and should have known how to use the belt on the passenger seat,' he said. Mr Ma said passenger seats on all loaders were removed after the accident, and it was forbidden to have any passenger on the vehicles at Chek Lap Kok airport. Mr Kelly recorded Luk's death as accidental.