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 INTERCOSTAL LOCATED AT STA 312-328 LBL 46 CRACKED. TRANSCRIBED FROM HAECO GSO NR 9280402 REMOVED DAMAGED INTERCOSTAL IAW B737-900 SRM 51-40-02. RECEIVED NEW INTERCOSTAL (PN# 141A5410U140) AND INSTALLED PER BDWG 141A54 00 REV- SHT26 AND B737-900 SRM 51-40-02. HAECO GSO MECH V901143 INSP QC444