As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C4 S1 C-CHECK INSPECTION REPORTED CORROSION WAS FOUND ON SHEAR PLATE AT FLOORBEAM Y1732 AFT OF FRAME 69. MAINTENANCE REMOVED AND REPLACE SHEAR PLATE IN ACCORDANCE WITH SRM 51-42-11 PARAGRAPH 6, 7, 13 AND EA A9-53R-30196. UPON COMPLETION OF THE INSTALLATION OF THE SHEAR PLATE IT WAS INSPECTED AND FOUND ACCEPTABLE.