[note 1] On 26 April 1994, the Airbus A300 serving the route was completing a routine flight and approach, when, just seconds before landing at Nagoya Airport, the takeoff/go-around setting (TO/GA) was inadvertently triggered.
Just 3 nautical miles (3.5 mi; 5.6 km) from the runway threshold at 1,000 feet (300 m) above ground level (AGL), the first officer (co-pilot) inadvertently selected the takeoff/go-around setting (also known as a TO/GA), which tells the autopilot to increase the throttles to take off/go-around power.
However, they did not disconnect the autopilot, which was still acting on the inadvertent go-around command it had been given, so it increased its own efforts to overcome the action of the pilot.
[11] The crash, which destroyed the aircraft (delivered less than three years earlier in 1991), was primarily attributed to crew error for their failure to correct the controls as well as the airspeed.
[14] These factors were deemed contributing incidents to the crash, after the primary failure of the pilots to take control of the situation once it began.
[9] The investigation also revealed that the pilot had been trained for the A300 on a flight simulator in Bangkok which was not programmed with the problematic GO-AROUND behavior.
Therefore, his belief that pushing on the yoke would override the automatic controls was appropriate for the configuration he had trained on, as well as for the Boeing 747 aircraft that he had spent most of his career flying.
In December 2003, the Nagoya District Court ordered China Airlines to pay a combined 5 billion yen to 232 people, but cleared Airbus of liability.
[14] On 7 May 1994, the CAA ordered China Airlines to provide supplementary training and a re-evaluation of proficiency to all A300-600R pilots.
[14] Following the crash, China Airlines decided to retire flight number CI140 and instead designate the Taipei-Nagoya service to CI150.