As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN FLOOR STRUCTURE INTERCOSTAL AT BL0 BETWEEN STA 500D AND STA 520 HAS UPPER ANGLE CRACKED AT FASTENER HOLE. / REMOVED AND REPLACED UPPPER ANGLE AT MAIN CABIN FLOOR STRUCTURE INTERCOSTAL AT BL0 BETWEEN STA 500D AND STA 520 AS PER REF B737-700 SRM 51-40-02-0G-0 AND DWG 143A5400