Jan 9, 2002 A Korean Air MD11 cargo plane fell back on its tail while being unloaded yesterday at Sydney Airport in Australia, trapping 10 crew members onboard. No one was injured.The accident left the nose of the jet tilted skywards.Police spokesman Ron Mason said the incident happened shortly after the jet arrived in Sydney from Seoul.The plane tilted after a car being unloaded from the cargo hold dropped several yards to the ground, shifting the aircraft's balance, Mason said.Emergency services crews rushed to the scene to rescue the crew members onboard. It took over an hour for a moveable elevator to get them to the ground, he said.Airport staff said baggage handlers with Qantas Airways were responsible for unloading the plane, which also had chemicals onboard. A Qantas spokeswoman said they were working under direction from a Korean Air load master. Leo/ORD