As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN LH OMEGA BEAM HAS CORROSION ON PREVIOUS REPAIRED AREA AT FRAME 20.-C/A-DISASSEMBLED PREVIOUS REPAIR OF CABIN LH OMEGA BEAM AT FR 20. REMOVED CORROSION FROM SHIMS AND FOUND SHIMS STILL SERVICEABLE. CLEANED AND REAPPLIED PRTOECTIVE FINISH TO ALL REPAIR PARTS IAW CPM 5121-06 AND ETN-EM-51-091. REINTALLED REPAIR IAW SRM 51-40-02. REFERENCE NRWC E783615 FOR INSTALLATION OF THE CROSS-MEMBER AT FR 20.