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US NTSB finds evidence of fatigue cracks in fatal UPS cargo jet crash

Fatigue cracks in the left pylon aft mount caused the engine to separate during takeoff, killing 14 and injuring 23, with MD-11s grounded pending inspection.

  • The National Transportation Safety Board published a preliminary report that included dramatic images of the engine fire, showing the engine's separation during takeoff.
  • Analysis of the pylon fractures showed fatigue cracks and overstress in the pylon aft and forward lug mounts after the left engine and pylon separated from the wing during takeoff rotation.
  • UPS Flight 2976 was taking off from Louisville Muhammad Ali International Airport on Nov. 4, cleared the blast fence, struck a UPS Supply Chain Solutions warehouse roof, and crashed into a supply yard.
  • Federal authorities temporarily grounded all McDonnell Douglas MD-11 aircraft pending individual inspections, while investigators recovered and cleaned fragmented wreckage as they prepare the final NTSB report.
  • Earlier this month the accident resulted in multiple fatalities and prompted data recovery; the crash killed 14 people, including three crewmembers and 11 people on the ground, and caused 23 injuries.
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The Columbian broke the news in Vancouver, United States on Thursday, November 20, 2025.
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