What was found
MAIN DECK FLOORBEAM UPPER CHORD CORRODED AT STA 377.5, LBL 38.5-45.5. REMOVED CORROSION FROM FLOORBEAM UPPER CHORD AT STA 377 BETWEEN LBL 20 AND LBL 58 IAW SRM 51-10-02. REMOVED .017 FROM .125 ORIGINAL THICKNESS. MATERIAL FOUND OUT OF LIMITS IAW SRM 53-00-51, FIG 101, DETAIL VI. REMOVED FLOORBEAM AND FABRICATED NEW WITH PN BAC 1518-338, BATCH 1898860 IAW DWG 141N5113 AND INSTALLED IAW DWG 141N5113 AND SRM 53-10-51. MAJOR REPAIR.