As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK, FOUND FLOOR BEAM UPPER CHORD CORRODED AT STATION 560 BETWEEN RBL 45.5 AND RBL 24.75. REMOVED DAMAGED AREA PER SRM 53-10-8 AND INSTALLED REPAIR PER SRM 53-10-8 FIG 3. ALODINED AND PRIMED AREA PER SRM 52-10-2. SIZE 27 INCH 7075-T6 AND SIZE 27 INCH BY 2 INCH BY 1.25 INCH.