As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISCREPANCY: STA 500B - 500C S-26R HAD CORROSION ON INTERCOSTAL. CORRECTION: STA 500B - 500C S-26R INTERCOSTAL REPLACED WITH MADE REPAIR PART IAW DWG NR 69-41473 AND B737-300 SRM 51-40-02 REV 118. IDENTIFIED IAW SRM REV 118 53-30-04. SERVICEABLE.