As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MID CABIN LATERAL FLOOR SUPPORT HAT CHANNEL IS CRACKED BS 537; BL 0 - RBL 25. / REMOVED CRACKED MID CABIN LATERAL FLOOR SUPPORT HAT CHANNEL BS 537; BL0 - RBL25 AND REPLACED IT WITH NEW PART P/N: 143A5240 - 36 IAW DWG 143A0060 REV A; SRM 51-40-02 AND SRM 51-40-05. ATAG #WN9532