As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 0868037) DURING INSPECTION FOUND CORROSION ON INTERCOSTAL ASSEMBLY PROJECTION S-23L BTW STATION 323 TO STA-291 E/E COMPARMENT. INTERCOSTAL ASSEMBLY PROJECTION S-23L BTW STATION-323 TO STATION-291 E/E COMPARMENT WAS REPLACED PER B737-800 DWG 141A8131 REV.E.