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 2 EACH CRACKS WERE FOUND IN CABIN FLOOR STRUCTURE WEB BETWEEN BS 1620 AND BS 1640, STR 17 R/T, WL 208. MAINTENANCE REMOVED CRACKED WEB FROM BS 1620 TO BS 1640; FABRICATED A NEW REPLACEMENT SECTION OF WEB PER DWG 146N8722; INSTALLED REPAIR PART IAW B757-200 SRM 51-40-02.