As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN CENTER SECTION FLOOR SUPPORT BREAK CRACKED AT LBL 1 STA 540<[01] REVOVED AND REPLACED PANEL BREAK AT MAIN CABIN CENTER SECTION; STA 540; LBL 1 AS PER B737-700 SRM 51-40-02-0G-0.;[02] ADDING DWG# 143A5240 O N STEP 1 (FINAL).;[03] VERIFIED STEP:1 AND STEP:2