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 EXFOLIATION CORROSION WAS FOUND ON UPPER AND LOWER SURFACE OF UPPER LEG ON UPPER FRAME AT L-1 DOOR WAY BS 315-340, LBL 59, WL 209. MAINTENANCE REMOVED CORRODED UPPER FRAME AT L-1 DOOR WAY FROM BS 315 TO BS 350, LBL 59, WL 209; FABRICATED A NEW REPLACEMENT CHORD; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02 FIG 12 PG 1 & 45.