Passengers plan to board the Shanghai-Chengdu passenger plane Airbus A340 after it made an ermgency landing at the Tianhe Airport in Wuhan, capital of central China's Hubei Province Friday, September 29, 2006. A passenger surnamed Zeng threatened to hijack and bomb the plane during the flight. No explosives or other banned objects were detected. Zeng, who is said to be suffering from  psychological problems, was sent to a local hospital for a medical check-up. [newsphoto] 

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