What was found
DURING BASIC CHECK, INSPECTION DISCOVERED THE FWD SERVICE DOOR CUT OUT LOWER BEAM PN 170-03719-005 TO HAVE CORROSION DAMAGE. THE CORROSION DAMAGE IS LOCATED IN TWO LOCATIONS. THE DAMAGE CONSISTS OF THE FOLLOWING APPROX DIMENSIONS. .50 INCH X .40 INCH TO A MAXIMUM DEPTH OF .085 INCH DEEP & 2.20 INCHES X 1.10 INCHES TO A MAXIMUM DEPTH OF .025 INCH DEEP. THE PERMANENT REPAIR ACCOMPLISHMENT BY REPLACEMENT OF THE CORRODED THRESHOLD BEAM PN 170-03719-005 WILL BE ACCOMPLISHED IAW ORIGINAL PRODUCTION DWGS & SRM STANDARD PRACTICES. CLASSIFIED THIS REPAIR AS A MAJOR REPAIR. ACCOMPLISHMENT OF THIS MAJOR REPAIR WAS ON EO E175-53MR-197 UNDER WO 1933032.