As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON RAIL NUT-PLATE LOCATED LEADING EDGE INTERNAL CAVITY ORSS 406 AT LT WING. REPLACED RAIL NUT-PLATE LOCATED LEADING EDGE INTERNAL CAVITY ORSS 406 AT LT WING IAW B737-800 SRM 51-10-02-0G-0 ITEM 9 SRM 51-40-02 AND DWG 112A4402 SHEET 40 REV A.