As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION, THE LEFT OUTBOARD BEAM FROM FRAME 48 TO FRAME 53 UNDER THE SEAT TRACK WAS FOUND TO BE CORRODED. MAINTENANCE REPLACED THE LEFT OUTBOARD BEAM FROM FRAME 48 TO FRAME 53 AND INSTALLED WITH SOLD RIVETS IN ACCORDANCE WITH SRM 51-40-02.