UPS MD-11F Crash Investigation Focuses on Pylon Bearing Failures
US investigators are examining why recurring bearing failures on Boeing MD-11 pylons did not prompt adequate preventative measures before a fatal UPS freighter crash in Louisville last November. The inquiry seeks to understand the oversight regarding known fatigue issues in the…
US investigators are currently examining the circumstances surrounding a fatal UPS freighter crash that occurred last November during takeoff from Louisville. The primary focus of the inquiry is to understand why a documented history of bearing failures on Boeing MD-11 pylons did not result in more robust corrective actions prior to the incident.
The investigation centers on fatigue issues identified in the bearing race, a critical component situated between two pylon bulkhead lugs. These lugs are responsible for anchoring the aft section of the engine pylon to the aircraft structure. The recurring nature of these bearing failures, and the apparent lack of comprehensive solutions, are key areas of concern for the investigative team.
