As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERCOSTAL BETWEEN STA. 328 AND STA. 344 HAS CORROSION INBOARD FROM L1 DOOR. GROUNDED - YES. REMOVED CORROSION AND FOUND OUT OF LIMITS IAW B737-800 SRM 53-00-52-1A-1, REMOVED LOCATED AND DRILLED AND REPLACED INTERCOSTAL PER B737-800 SRM 51-40-02, 51-40-05, & IAW BOEING DWG#141A5400 REV:-.