As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C4 S1 CHECK INSPECTION REPORTED CORROSION WAS FOUND ON SHEAR PLATE AT FLOORBEAM Y1732 AFT OF FRAME 69. MAINTENANCE REMOVED AND REPLACED SHEAR PLATE IN ACCORDANCE WITH SRM 51-42-1 PARAGRAPH 6, 7 AND EA A9-53R-30196. UPON COMPLETION OF THE INSTALLATION OF THE SHEAR PLATE IT WAS INSPECTED AND FOUND ACCEPTABLE.