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-17 CHECK EXFOLIATION CORROSION WAS FOUND ON FLOOR SUPPORT BEAM BS 1006-1016, LBL 10. MAINTENANCE REMOVED FLOOR SUPPORT BEAM BS 1006-1016, LBL 10 AND UPON FURTHER EVALUATION DISCOVERED FILLER WAS CORRODED BEYOND LIMITS; FABRICATED A NEW FILLER; INSTALLED FILLER ON BEAM; AND REINSTALLED FLOOR SUPPORT BEAM IAW B737-300 SRM 51-30-01 PG 23.