China Airlines Flight 006 is a Boeing 747-SP of China Airlines. During the cruise, the flight had a sudden accident, resulting in serious injuries to two passengers on board and serious damage to the aircraft. Although there were still several minutes to deal with this situation, the pilot was still unable to successfully control the unbalanced thrust caused by engine failure. At last, the plane continued to roll and fell 9000 meters at a speed close to the speed of sound, and was impacted by high speed and high temperature at the same time. Finally, the pilot regained control of the plane and transferred to San Francisco International Airport.This incident hit China Airlines seriously, making it rated as an unsafe airline by Skytrax, and becoming the basis of the "theorem" of "China Airlines' four year limit" (Baidu translation)