
NTSB flags long-known engine-mount issue behind UPS crash
The NTSB says Boeing noted four prior failures of the MD-11’s engine-mount bearing race in 2011 but did not classify it as a safety-of-flight issue or require repairs; investigators linked the Louisville UPS crash to cracked engine-mount parts and ongoing maintenance questions on older airframes, with a final determination pending and echoes of a 1979 DC-10 disaster.

