What was found
DURING C3 C-CHECK, INSPECTION NOTED R2 DOOR SILL, AFT OF GIRT BAR FITTING, AFT OUTBOARD NUT PLATE HOLE HAS SIGNS OF CORROSION. MAINTENANCE REMOVED NUT PLATE IN ACCORDANCE WITH A319 SRM 51-42-11, ENLARGED HOLE TO CLEAN CORROSION, PRIMED AND PAINTED IN ACCORDANCE WITH A319 SRM 51-75-12 AND ENGINEERING AUTHORIZATION A9-53R-30726.