As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE CURRENT HMV3 CHECK, THE NR 2 PYLON P/N 311N3211 -1 FORWARD ENGINE MOUNT FITTING WAS FOUND WITH FRETTING CORROSION ON THE LOWER SURFACE AROUND THE MOUNT HOLES. PERMANENT REPAIR WAS ACCOMPLISHED PER PRODUCTION PERMIT B757-54-25940PA AND ERA 457245-14. BLENDED ENG MOUNT SURFACES PER PP, PASSIVATED BUSHING PER PP, REINSTALLED BUSHING PER PP, FLAP PEEN AND REAPPLIED PRIMER.