What was found
R1 DOOR SILL BEAM WAS CORRODED AROUND THE FWD & AFT GIRT BAR FITTING HOLES & AROUND THE FWD DRAIN HOLE. CORROSION WAS REMOVED & AREA BLENDED AROUND THE DRAIN HOLE. FWD GIRT BAR FITTING AFT OTBD HOLE & ALL 4 HOLES AT THE AFT GIRT BAR FITTING WERE SPOT FACED & REPAIR WASHERS INSTALLED IAW SRM 53-11-14 PARA 4 E FIG 108. MINIMUM MATERIAL THICKNESS AT DRAIN HOLE IS 0.181 INCHES. MINIMUM ALLOWABLE IS 0.177 INCHES. MINIMUM MATERIAL THICKNESS AT GIRT BAR FITTING HOLE S IS 0.170 INCHES. MINIMUM ALLOWABLE IS 0.148 INCHES. AREA REQUIRES REINSPECTION IAW SRI 53-11-14-1-001-00 PARA 3 A TBL 102, INITIAL INSP 60 000C FROM 1ST FLIGHT.