As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD CARGO COMPT REF NRC NR 5726 LT BATH FITTING ATT SURFACE FOUND HEAVY CORROSION AT STA 983 STR 38L PRESSURE BULKHEAD (AFTER FTG REMOVED ). CORROSION BLEND OUT 0.100" BY 2" BY 2" EXCEED SRM 53-10-01 FIG 1 LIMITS, BS 1000 STR 38L UPPER BATH TUB FTG REPLACED AS PER SRM 51-10-01 PG 9 & EO NR B747-5310-18579 APPENDIX G FIG 11.