As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE: C, MAIN CARGO COMPARTMENT SA 1020 LBL 20 CORROSION ON EXPANSION JOINT UNDER TOP WEB. REMOVED CORROSION ORIGINAL MAT THICKNESS .040 LOSS OF .007 WITH .033 REMAINING IS OUT OF LIMITS IAW SRM 53-00-51-1A1. REMOVED, FABRICATED AND INSTALLED NEW EXPANSION JOINT IAW DWG 144N500 AND SRM 51-40-02.