As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CPCP CHECK INSPECTION, FOUND LEVEL 2 CORROSION, KEEL BEAM LWR PANELS CORRODED FROM STA1241-1480. REMOVED CORROSION AND REPAIRED IAW B747 SRM 51-40-15. CORROSION TASK CARD NUMBER C53-100-01 PART 8 OF 10 AND PART 10 OF 10. NON-ROUTINE TASK CARD NUMBER 108146.