As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERCOSTAL BETWEEN FLOOR BEAM STA 312 AND 328 LBL 45 HAS CRACK AT NUT PLATE. GROUNDED - YES. REMOVED INTERCOSTAL IAW B737-900ER SRM 51-4-02. LOCATED AND DRILLED NEW PART IAW B737-900ER SRM 51-40-02 AND IAW BAC DWG 141A5400 REV:-. INSTALLED NEW PART IAW B737-900ER SRM 51-40-02 AND IAW BAC DWG 141A5400 REV.-