As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C18 CHECK DISCOVERED EXFOLIATION CORROSION LOCATED AT AFT CARGO COMPARTMENT ON A STRINGER TIE AT BS 727D AND STR 26L. MAINTENANCE REMOVED STRINGER TIE IAW BOEING 737-300 SRM 51-40-02-0G. INSTALLED NEW STRINGER TIE AT BS 727D AND STR 27L IAW BOEING 737-300 SRM 51-40-02-0G.