As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER REMOVAL OF WING ACCESS PANEL 521BL AT LEFT WING TO PERFORM LUBRICATION OF SLAT TORQUE TUBES, CRACK ON MACHINED RIB LEADING EDGE SS57.16 AT LEFT WING MACHINED RIB LEADING EDGE SS57.16 AT LEFT WING WAS REPAIRED PER REO 690-57-41-549 REV.--