Although the accident was thought to have been caused by an explosive device, an investigation by the Republic of China Civil Aeronautics Board concluded that severe corrosion led to a pressure hull rupture.
The aircraft had previously lost cabin pressure on 5 August and also when the crew had been returning it to Taipei for repairs earlier on the day of its fatal flight.
The crash occurred 94 miles (151 km) south of Taipei and the wreckage was in an area with the length of 4 miles (6.4 km). A total of 110 passengers and crew including 18 Japanese citizens (including Kuniko Mukōda), and two Americans, died. The accident was the deadliest on Taiwanese soil at the time, and to date is still the second-deadliest behind China Airlines Flight 676.