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 CORROSION WAS FOUND ON FLOORBEAM AT BS 328, BETWEEN RBL 24 AND RBL 45. MAINTENANCE REMOVED DAMAGED SECTION OF FLOORBEAM UPPER TEE CAP AT BS 328, BETWEEN RBL 24 AND RBL 45; FABRICATED A NEW REPLACEMENT UPPER TEE CAP AND 4 EACH REPAIR ANGLES; INSTALLED REPAIR PARTS IAW B737-200 SRM 53-10-09 FIG 005.