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-09 CHECK INTERGRANULAR CORROSION WAS FOUND ON CABIN FLOOR SHEAR DECK BETWEEN BS 1680 AND BS 1720, RBL 0 AND RBL 54. MAINTENANCE REMOVED CORRODED SHEAR DECK FROM BS 1680 TO BS 1720, LBL 74 TO RBL 74; FABRICATED A NEW REPLACEMENT SHEAR DECK; INSTALLED REPAIR PART IAW B757-200 SRM 51-40-02.