As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION, CORROSION WAS FOUND ON THE CHANNEL FRAME AT FRAME 65 BETWEEN STRINGERS 15L AND 16L. THE CORRODED AREA MEASURED 2.9" BY 0.8". MAINTENANCE REPLACED FRAME 65 BETWEEN STRINGERS 15L AND 16L. THE NEW PART WAS INSTALLED WITH A SOLID RIVET IN ACCORDANCE WITH SRM 51-40-02.