As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(SUPPORT TASK) MAIN CABIN FLOOR CREASE BEAM CORRODED AT MULTIPLE AREAS BETWEEN STA 312-344 LBL60. TRANSCRIBED FROM HAECO GSO NR C# 9288258. REMOVED AND REPLACED INNER CHORD IAW BOEING DWG# 141A8110 SHEET 4 REV-, BOEING DWG# 140A9810 SHEET 26 REV- AND B737-700 SRM 51-4 0-02.