What was found
DURING C4/S1 CHECK, INSPECTION REPORTED CORROSION IN THE AFT OTBD NUTPLATE HOLE OF THE R2 DOOR SILL FWD GIRT BAR FITTING MOUNT PLATE. PERFORMED HFEC ON DAMAGED AREA IAW NTM 51-10-08, PAGES 601-608, AND FOUND NO DEFECTS. FABRICATED AND INSTALLED REPAIR DOUBLER IAW SRM 51-42-11, 53-41-14, 51-74-00, 51-11-13, 51-21-11 AND EA A9-53R-12220.