STE San Antonio Aerospace

UPS did not require detailed inspections of engine mount bearings on its MD-11 freighters, despite Boeing's earlier recommendation, leading to an engine detachment and fatal crash. Boeing and the FAA acknowledged misjudging the risk of bearing failure, which caused engine lugs to break during takeoff at Louisville’s Muhammad Ali International Airport.

UPS did not require detailed inspections of a critical engine-mount bearing that failed, leading to an engine detachment and crash in Louisville. Boeing and the FAA initially downplayed the risk, and maintenance company STE San Antonio Aerospace followed UPS's inspection guidelines, which focused on corrosion rather than bearing failure.

UPS did not require detailed inspections of a key engine-mount part that failed, leading to an engine flying off a plane that crashed in Louisville, killing three pilots and 12 others. Boeing and the FAA initially claimed the part's failure did not jeopardize flight safety, despite prior recommendations for enhanced inspections.

UPS did not require detailed inspections of engine mount bearings in its MD-11 freighters, despite Boeing's earlier recommendations, leading to an engine separation during takeoff that caused a crash. The failure resulted in three pilot deaths, 12 fatalities on the ground, and multiple injuries. Boeing, UPS, the FAA, and a maintenance company all acknowledged misunderstandings about the risks of bearing failure.