As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FRAME OUTER CHORD CORRODED AT STA 1260L BELOW FLOOR LINE (MAIN DECK). REMOVED CORROSION PER BOEING 747-SRM 51-10-01 PAGES 13-14. MATERIAL LOSS WITHIN LIMITS PER BOEING 747-SRM 53-10-01 FIG 1 SHEET 2 AND 3 NOTE B AND SHEET 6 DETAIL II. REPAIRED SHORT EDGE MARGIN FASTENERS PER ECRA 471-57-219-2.