What was found
NR 3 ENGINE OUTBOARD CORE COWL UPPER LONGERON WORN AFT OF CENTER HINGE. REMOVED DAMAGED AREA IAW FEDEX EA 8-5410-81518, FABRICATED AND INSTALLED REPAIR DOUBLER IAW FEDEX EA 8-5410-81518, NACELLES/PYLON, NR 3 ENGINE RIGHT HAND CORE COWL UPPER LONGERON REPAIR. REFERENCE NON-ROUTINE N00176.