What was found
DURING C4/S1 CHECK, INSPECTION REPORTED CORROSION IN THE AFT OTBD NUTPLATE HOLE OF THE L2 DOOR SILL FWD GIRT BAR FITTING MOUNT PLATE. PERFORMED ROTO PROBE INSPECTION ON HOLE IAW NTM 51-10-01, PAGES 601-622 AND AND FOUND A CRACK BETWEEN RIVET HOLE AND FASTENER HOLE. REMOVED DAMAGE AND PERFORMED HFEC, NO DEFECTS FOUND. FABRICATED AND INSTALLED REPAIR DOUBLER AND FILLER AND INSTALLED NEW NUTPLATE ON REPAIR DOUBLER. WORK ACCOMPLISHED IAW SRM 53-41-14, 51-74-00, 51-10-01, 51-10-08, 51-11-13, 51-75-12, 51-42-11 AND EA A9-53R-12218.