What was found
DURING BASIC CHECK, INSPECTION DISCOVERED THE AFT FUSELAGE L2 PAX DOOR THRESHOLD BEAM, PN 170-65703-003, TO HAVE CORROSION DAMAGE. THE CORROSION DAMAGE IS LOCATED IN MULTIPLE LOCATIONS, REF FIGURES 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 E175-53MR-226 UNDER WO 1996609.