Improperly installed CF6-80C2 bearings have been linked to two incidents, including a January 2023 uncommanded engine failure on a new Boeing 767-300 freighter.
United Airlines is replacing engines on two Boeing 737NGs after finding parts from AOG Technics, a supplier alleged to have falsified certification documents.
Boeing-recommended 777 structural inspections backed by inaccurate maintenance instructions may force affected operators to act quickly to undo any damage.