As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AN MBV INSPECTION, THE GALLEY FRAME 258.0 WAS FOUND CORRODED BEYOND SRM LIMITS. PERFORMED A 23.0 CUTOUT OF THE DAMAGED AREA OF FRAME 258 AND TREATED THE BARE METAL EDGES. FABRICATED A DOUBLER, SHIMS AND TRIPLER FOR REPAIR. REPAIR DONE IAW MFG SRM.