As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT RIB 15A IN PAX DOOR ENTRANCE AFT OF PAX DOOR AFT ACTUATOR RIB CLIP IS CORRODED THROUGH TO SKIN. P/N 120-09800-001. DISCOVERED DURING C-CHECK INSPECTION. REMOVED FRAME SHEAR AT FRAME 15A. INSTALLED FRAME 15A SHEAR TIE BETWEEN STRINGER 18L - 19L.