As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-18 CHECK CORROSION WAS FOUND ON L-2 DOOR SILL INNER CHORD BETWEEN BS 950 AND BS 994, LBL 50. MAINTENANCE REMOVED CORRODED L-2 DOOR SILL INNER CHORD FROM BS 917 TO BS 1016, LBL 50; FABRICATED A NEW REPLACEMENT INNER CHORD PER DWG 65-52878; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02.