What happened
On June 11, 2010, at 21:53 Japan Standard Time, a Boeing 747-400F, registration JA01KZ, operated by Nippon Cargo Airlines Co., Ltd., departed from Narita International Airport. Shortly after takeoff, the crew shut down the No. 1 (left) engine, a General Electric CF6-80C2B1F turbofan, because of engine vibration. The flight returned to the airport and landed at approximately 23:08. There were no injuries among the three persons on board.
Following the removal of the No. 1 engine from the aircraft on June 14, 2010, an inspection identified serious damage to the engine's turbine blades.