As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C3 C-CHECK, INSPECTION NOTED THE LEFT GALLEY FLOOR STRUCTURE AT FRAME 66 HAS TWO NUT PLATE HOLES CORRODED AFT OF GIRT BAR FITTING ADAPTER PLATE. MAINTENANCE TRIMMED OUT DAMAGED AREA, FABRICATED REPAIR ANGLE AND FILLER AND INSTALLED IN REFERENCE TO ENGINEERING AUTHORIZATION A9-53R-30909.