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 STRINGER 28 RT AT BS 344, AFT EDGE OF E&E BAY DOOR CUTOUT. MAINTENANCE REMOVED DAMAGED STRINGER 28 RT FROM BS 344 TO BS 360; FABRICATED A NEW REPLACEMENT STRINGER CHANNEL PER DWG 69-48948; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02, FIG 8 & 12 PG 1 & 38.