What was found
DURING C4/S1 CHECK, INSPECTION REPORTED CABIN FLOOR CENTER SUPPORT AT Y254, FR16, CORRODED. REMOVED DAMAGED AREA OF FLOORBEAM Y254 IAW SRM 53-00-14, FIG 204. REMOVED AND REPLACED FLOORBEAM AND ANGLES IAW SRM 51-42-11, EA NR A9-53R-12100 AND EA NR AO-51T-11976.