The crew departed Taipei-Songshan on a maritime patrol flight over the China Sea. En route, in unknown circumstances, the airplane went out of control and crashed into the sea off the Magong AFB located in the south part of the Penghu Islands (Pescadores Islands). The aircraft sank and was lost and all six crew members were killed.
Probable cause (official findings): The exact cause of the accident remains unknown but it was reported that the crew apparently encountered technical issues with the undercarriage.