As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE PERFORMING AN ANNUAL INSPECTION THE AREA AT THE AFT END OF NR 2 / 3 / 4 SEAT RAIL UNDER THE FLOOR AT FS 283.85 WAS NOTED TO HAVE SEVERE CORROSION ON THE STIFFENER P/N 2611131-3 AND THE DOUBLERS P/N 2611192-4 AS WELL AS THE SEAT RAIL. THE CORROSION WAS CLEANED AS REQUIRED FROM THE STRUCTURE AND SEAT RAILS NR 2 AND NR 4. THE STIFFENER, DOUBLERS AND NR 3 SEAT RAIL, AS WELL AS THE ATTACHING HARDWARE WAS REPLACED.