What was found
DURING BASIC CHECK, INSPECTION DISCOVERED THE LT AFT PAX DOOR CUT OUT THRESHOLD BEAM PN 170-65703-005 TO HAVE CORROSION DAMAGE. THE CORROSION DAMAGE IS LOCATED IN MULTIPLE LOCATIONS, REF FIG 1 - 4 FOR DAMAGE DIMENSIONS & LOCATIONS. THE PERMANENT REPAIR ACCOMPLISHMENT BY REPLACEMENT OF THE CORRODED THRESHOLD BEAM WILL BE ACCOMPLISHED IAW ORIGINAL PRODUCTION DWGS & SRM STANDARD PRACTICES. ENGINEERING HAS CLASSIFIED THIS REPAIR AS A MAJOR REPAIR. ACCOMPLISHMENT OF THIS MAJOR REPAIR WAS ON EO E170-53MR-034 UNDER WO 2051575.