What was found
DURING C4/S1 CHECK, INSPECTION REPORTED CORROSION ON FLOORBEAM NUTPLATE HOLES AT +Y1292 (LT), 4 INCHES FWD OF FR68-69. REMOVED AND REPLACED FLOORBEAM IAW A319 SRM'S 51-74-00, 51-42-11, 53-00-14, 51-44-11, 51-75-12 AND EA A9-53R-12267 (STEPS 1 AND 2).