UnpressAI | uk/en

02 Jul 2026, 15:06

Investigation reveals what caused UPS to fail to report damage to Boeing’s MD-11

  • In documents from the NTSB, it was stated that UPS did not report damage to the MD-11 cargo aircraft.
  • UPS blamed the damage on an incident involving a Boeing aircraft, which had a similar problem.
  • After FedEx’s accident, the company reported damage to the aircraft, which UPS later claimed was caused by MD-11.

New documents shed light on the crash investigation between two aircraft in Louisville, saying that UPS failed to report details of damage to the aircraft’s engines, which could have led to the problem that ultimately caused the engine failure. The materials were released in court.

Incidentally, the plane’s flight was delayed, and UPS’s flight took off from Muhammad Ali International Airport in Louisville. The crash occurred when the plane attempted to land, and all three pilots were killed.

UPS said that the materials sent to the National Transportation Safety Board (NTSB) showed that it did not report damage to the aircraft’s engines to Boeing, which had been investigated. The company said that the damage was caused by a problem with the aircraft’s engine mount.

During the investigation, it was found that Boeing had reported an issue to the FAA regarding a potential risk of damage to the engine’s lugs, which could cause the MD-11 engine to fail. In addition, it was found that the damage was caused by a crack in the engine mount.

UPS later claimed that Boeing had broken the chain of events and that the company did not report the problem. The company said that it had not received any information about the issue and that it had not been aware of the damage.

In court documents, it was noted that Boeing informed the FAA about a potential risk of damage to the engine’s lugs — from the end of 19,900 cycles to the end of 29,260. The court found that the problem could be caused by a crack in the lug, which had not been detected in time. It was noted that the crack could have led to the failure of the engine.

The UPS incident, in which the company’s plane’s engine was damaged, involved 21,043 cycles, which is within the range of the crack. It was also noted that FedEx’s MD-11 was damaged in the same way, with the same number of cycles, or with an engine failure due to a crack in the lugs.

After FedEx’s accident, the company reported damage to the MD-11 plane’s engine, which FAA believed was caused by a similar problem. UPS later claimed that the engine failure was caused by a crack in the lugs, which had not been detected in time. The company said that the crack could have led to the engine failure.

Final NTSB findings said the reason for the accident was that the plane’s engine failed in Louisville, and the investigation found that the engine failure could have been caused by a crack in the lug or by a postal item.

Tags: Crime/Aviation

Articles on this topic:

  • www.independent.co.uk - Boeing told UPS that engine flaw wasn’t flight safety risk before 15 died, officials claim
  • apnews.com - UPS never required detailed inspection of part that failed before engine flew off plane that crashed
  • www.independent.co.uk - How a hidden Boeing engine flaw ended in a crash that killed 15