As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERCOSTAL AT MAIN CABIN FWD WET AREA FLOOR STRUCTURE BETWEEN STA 328 TO STA 344 LBL 44" WITH CORROSION AREA ON UPPER SURFACE ( NEAR STA 344 ) REF. AAR N/R:100025414 STEP CREATED TO DOCUMENT CORRECTIVE ACTION, REPLACED INTERCOSTAL AT FWD WET AREA STRUCTURE STA328 TO STA344,LBL 44" IAW SRM 51-40-02-0G-0 AND DRAWING 141A5730. REMOVED AND REPLACED INTERCOSTAL AT MAIN CABIN FWD WET AREA FLOOR STRUCTURE BETWEEN STA 328 TO STA 344 LBL 44".