As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CPCP INSPECTION FOUND LEVEL 2 CORROSION, FLOORBOARD SUPPORT AT RBL 64 BETWEEN 2280 AND 2300. REMOVED CORROSION IAW B747 SRM 51-10-01. FOUND OUT OF LIMITS AS PER SRM 53-10-01. REMOVED AND REPLACED SUPPORT WITH EXTRUSION IAW SRM 51-10-01. CORROSION TASK CARD NUMBER C53-210-01 PART 4 OF 8. NON-ROUTINE TASK CARD NUMBER 12807.