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. CORROSION UNDER FLOOR PANELS AT FS 855 RBL 11 TO 33 APPROX 84 TO 105 FROM RT SIDE WALL ON FLOOR SUPPORTS. REMOVED AND REPLACED CORRODED FLOOR SUPPORTS IAW B747 SRM 51-10-01. CORROSION TASK CARD NUMBER C53-210-01 PART 3 OF 8. NON-ROUTINE TASK CARD NUMBER 12828.