As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLOOR INTERCOSTAL CRACKED AT BL0 AND BETWEEN BS344 AND BS360. REF AAR NR 9882245 REMOVED INTERCOSTAL CRACKED AT BL0 BETWEEN BS344 AND 360 FLOOR SUPPORT IAW B737-900ER SRM #51-40-02 LOCATED AND DRILLED NEW INTERCOSTAL P/N 141A5410U150 PER B737-900 SRM 51-10-02 INSTALLED NEW INTERCOSTAL AT BL0 BETWEEN BS344 AND BS360 IAW BOEING 737-900ER SRM 51-40-02