As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE: C. FOUND DURING REPLACEMENT OF BSTA 1000 LOWER CHORD (EO B747-5310-5301E) CORROSION ON WEB OF FRAME BSTA 980 NEAR STR 46 LT AFT SIDE OF FRAME. CORRODED PART OF WEB IS OUT OF LIMITS ACC. SRM 53-10-01 ITEM 1 NOTE B. REMOVED CORRODED PART OF WEB, CUT OUT IS 2 SQUARE INCH. REPAIRED FRAME ACC. SRM 53-10-04 FIG. 52 DETAIL 2.