As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-05 CHECK CORROSION WAS FOUND ON RT STRINGER GUSSET AT BS 1088, STR 20 RT. MAINTENANCE REMOVED CORRODED RT STRINGER GUSSET AT BS 1088, STR 20 RT; FABRICATED A NEW REPLACEMENT GUSSET PER DWG 69-40234; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02.