WORKERS will this morning resume attempts to move the wreckage of the China Airlines jet that crash-landed at Chek Lap Kok a week ago, but authorities have yet to decide when to reopen the south runway. Acting airport management director Howard Eng said: 'It is still not possible to predict when the south runway will reopen for normal operations since this is subject to weather and completion of work.' Yesterday, engineers severed the front section of the overturned McDonnell Douglas MD-11. The plane must be cut into three parts for removal. An attempt to lift the entire fuselage on to a trailer was aborted on Friday. The Airport Authority was optimistic the front section could be removed today. 'Cutting a large passenger aircraft into three pieces is extremely complex, difficult and time-consuming,' Mr Eng said. The severed section, including the cockpit which may contain important evidence about why the plane crashed and overturned on landing, was unstable and needed to be removed first. Heavy rains hampered removal, softening the grass where the stricken plane came to a halt after flipping over during landing. Flight CI642 from Bangkok, carrying 300 passengers and 15 crew, was attempting to land at 6.48pm when its right wing clipped the runway and was torn off, leaving a trail of fire. A No 8 signal for Typhoon Sam was hoisted at the time. The crash claimed its third victim on Friday when father-of-four Tse Kwong-fat, 49, died from 55 per cent burns and respiratory failure. Two others died on Sunday. Thirty-one crash victims remain in hospital, with a 23-year-old flight attendant still listed in critical condition. Workers must repair 43 lights and 2,000 square metres of the south runway. The wreckage will be moved to a vacant site two kilometres away for further investigation.