As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT 3957, CRACK SUPPORT CHANNEL LOCATED FLOOR STRUCTURE BS 540 LBL 3.0 AT CENTER WING BOX. CORRECTIVE ACTION: REPLACED SUPPORT CHANNEL LOCATED FLOOR STRUCTURE BS 540 LBL 3.0 AT CENTER WING BOX AS PER B737-900ER SRM 51-40-02-0G, B737-900ERSRM 51-10-02 ITEM 9 AND DWG 143A5240 REV-C RII INSPECTION COMPLETE. (LP 2732096)