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, BETWEEN BS 640 AND BS 660, RBL 36, AUXILIARY CHANNEL FLOOR SUPPORT CORRODED. REMOVED CORROSION IAW B747 SRM 51-10-01. INSTALLED IAW B747 SRM 51-03-02. CORROSION TASK CARD NUMBER C53-210-01 PART 2 OF 8. NON-ROUTINE TASK CARD NUMBER 12895.