As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-18 CHECK CORROSION WAS FOUND ON LOWER SURFACE OF UPPER LEG ON FLOOR SUPPORT BETWEEN BS 951 AND BS 963, LBL 42. MAINTENANCE REMOVED CORRODED FLOOR SUPPORT BETWEEN BS 951 AND BS 963, LBL 42; FABRICATED A NEW REPLACEMENT FLOOR SUPPORT PER DWG 65C10592-154; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02 FIG 8 & 12 PG 1, 38 & 45.