What was found
DURING BASIC CHECK IN SAT, INSPECTION DISCOVERED THE AFT CARGO, AFT LOWER CUT OUT INTERNAL DOUBLER PN 170-85307-001 TO HAVE CORROSION DAMAGE. THE DAMAGE IS LOCATED BETWEEN FRAME 80 & 81, STRINGER 27R - 28R. THE DAMAGE CONSISTS OF THE FOLLOWING APPROXIMATE DIMENSIONS. 1.3 INCHES X 1.0 INCH WITH 100% MATERIAL LOSS, 2.0 INCHES X 2.0 INCHES WITH 100% MATERIAL LOSS & 2.0 INCHES X 1.0 INCH WITH 90% MATERIAL LOSS. THE PERMANENT REPAIR ACCOMPLISHMENT BY REPLACEMENT OF THE CORRODED DOUBLER WILL BE ACCOMPLISHED IAW ORIGINAL PRODUCTION DWGS & SRM STANDARD PRACTICES. CLASSIFIED THIS REPAIR AS A MAJOR REPAIR. THIS REPAIR WILL BE ACCOMPLISHED ON EO E175-53MR-154 REV IR UNDER WORK ORDER 1445091.