As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LCQ - MAJOR REPAIR - DURING C-15 CHECK INTERGRANULAR CORROSION WAS FOUND ON AFT MAIN CABIN CREASE BEAM BETWEEN BS 947 AND BS 1006, RBL 65. MAINTENANCE REMOVED CORRODED CREASE BEAM FROM BS 920 TO BS 1006, RBL 65; FABRICATED A NEW REPLACEMENT CREASE BEAM; INSTALLED REPAIR PART IAW B737-200 SRM 51-30-02.