What was found
DURING C4 CHECK, DISCOVERED CORROSION ON EXTRUSION AT R2 DOOR CUTOUT, BETWEEN FS 66 +5, AND FS 68 -5, BL -Y1465. MAINTENANCE REMOVED CORRODED EXTRUSION AT R2 DOOR CUTOUT BETWEEN FS 66 +5 AND FS 68 -5 IAW AIRBUS 320 SRM 51-42-11. INSTALLED NEW EXTRUSION AT R2 DOOR CUTOUT BETWEEN FR 66 +5 AND FR 68 -5 IAW SRM 51-42-11.