Boeing Aware of Longstanding Flaw Linked to Fatal UPS Cargo Plane Crash

Thu Jan 15 2026 19:26:51 GMT+0200 (Eastern European Standard Time)

An investigation reveals that Boeing had previously identified a critical structural flaw in the MD-11F cargo plane involved in a tragic crash that killed 15 people in Kentucky last November.

A recent investigation into the UPS cargo plane crash in Kentucky has uncovered that Boeing was aware of a structural defect in the MD-11F model, which had been identified over 15 years ago. The flaw led to the separation of an engine during takeoff, resulting in the plane crashing and killing 15 individuals. The ongoing investigation by the NTSB raises concerns about safety protocols at Boeing, as similar flaws have been noted in other aircraft, yet the company decided against stricter safety measures.

An aircraft that crashed in flames in Kentucky in November had a structural flaw that had been identified by Boeing on similar planes 15 years ago, according to investigators.

The MD-11F freighter operated by UPS crashed after one of its engines separated from the wing as it was preparing to take off from Louisville.

The plane briefly lifted off from the runway before hurtling out of control into an industrial area. Fifteen people were killed including three crew and 12 on the ground.

In an update, the US National Transportation Safety Board (NTSB) revealed that cracks found in the engine mounting assembly had previously occurred on several other aircraft.

At the time the manufacturer responsible for the aircraft, Boeing, concluded that the issue would not result in a safety of flight condition.

The MD-11 is a relatively elderly design that was originally produced by McDonnell Douglas. Boeing acquired the company in 1997.

The last MD-11 came off the production line in 2001, but Boeing has continued providing parts and service support.

In the aftermath of the Kentucky disaster, the NTSB issued a preliminary report focusing on cracks in the engine attachment mechanism. Its latest update describes fractures due to fatigue in a critical bearing and the mounting it is meant to sit in.

The report highlights that Boeing had previously identified failures of the same part on four occasions, impacting three different aircraft. In 2011, the company issued a service letter advising operators to inspect the part every five years.

Tim Atkinson, a former air accident investigator, expressed concern about Boeing's conclusions regarding safety risks associated with the structural flaw.

Boeing has faced scrutiny in recent years over various safety-related issues, including the faulty software design in its 737 Max, which was involved in two deadly crashes.

In a statement, the company expressed its support for the NTSB investigation and extended condolences to the families affected by the crash.

The investigation is ongoing, and a final report from the NTSB is expected to provide further insights into the cause of the accident.