Incident Overview

Description
Far Eastern Air Transport flight 103, a Boeing 737-200, crashed near Sanyi Township, Taiwan, killing all 110 on board. Seventeen days before the accident, on August 5, 1981 the aircraft lost cabin pressure during a flight from Taipei (TSA) to Kaohsiung (KHH) in Taiwan. On August 22, 1981, the aircraft took off from Taipei on a flight to Makung (MZG). Ten minutes after takeoff from there was a loss of cabin pressure. The flight crew returned to Taipei, where repair work was carried out. Later that day the aircraft entered service again as Flight 103 to Kaohsiung. Fourteen minutes after takeoff the aircraft suffered an explosive decompression and disintegrated in flight. PROBABLE CAUSE: “Extensive corrosion damage in the lower fuselage structures, and at a number of locations there were corrosion penetrated through pits, holes and cracks due to intergranular corrosion and skin thinning exfoliation corrosion, and in addition, the possible existence of undetected cracks because of the great number of pressurization cycles of the aircraft (a total of 33,313 landings), interaction of these defects and the damage had so deteriorated that rapid fracture occurred at a certain flight altitude and pressure differential resulting rapid decompression and sudden break of passenger compartment floor beams and connecting frames, cutting control cables and electrical wiring. And eventually loss of power, loss of control, midair disintegration.”
Primary Cause
Extensive corrosion damage in the lower fuselage structures, including corrosion penetrated through pits, holes, and cracks due to intergranular corrosion and skin thinning exfoliation corrosion, combined with the cumulative effect of 33,313 landings, leading to rapid fracture at a certain flight altitude and pressure differential.Extensive corrosion damage in the lower fuselage structures, including corrosion penetrated through pits, holes, and cracks due to intergranular corrosion and skin thinning exfoliation corrosion, combined with the cumulative effect of 33,313 landings, leading to rapid fracture at a certain flight altitude and pressure differential.Share on: