What was found
DURING THE ACCOMPLISHMENT INCOMING FWD FUSELAGE SKIN INSPECTION IN B4 BASIC CHECK, INSPECTION DISCOVERED CRACKED & DISPLACED FILLER COMPOUND AT AN EXISTING EXTERNAL REPAIR DOUBLER LOCATED BETWEEN FRAME 9 & 11, STRINGER 14L & 18L INSTALLED BY EO E175-53MR-014. THE INTERNAL DOUBLER WAS INSTALLED BY EA E175-53-020. ENGINEERING DECIDED TO REMOVE THE EXTERNAL DOUBLER FOR FURTHER DAMAGE EVALUATION. AFTER REMOVAL OF THE DOUBLER, DISCOVERED 3 EACH DENTS MEASURING APPROX THE FOLLOWING DIMENSIONS, 2.10 INCHES X 1.45 INCHES TO A MAXIMUM DEPTH OF .010 INCH DEEP. 2.20 INCHES X 1.97 INCHES TO A MAXIMUM DEPTH OF .010 INCH PROTRUDING. INTERNAL DOUBLE – 4.25 INCHES X 3.90 INCHES TO A MAXIMUM DEPTH OF .122 INCH DEEP. DURING AN ATTEMPT TO COLD WORK OUT THE DENT DAMAGE TO ORIGINAL CONTOUR IAW SRM PART II 51-10-05, THE SKIN OIL CANNED IN WITH THE APPROX DIMENSIONS 4.6 INCHES X 2.8 INCHES. IAW ETD2015-170-050251C. REQUESTED & RECEIVED RELIEF IN THE FORM OF ETD2015-170-050251C FOR THE ACCOMPLISHMENT OF THE PERMANENT REPAIR. ENGINEERING HAS CLASSIFIED THIS REPAIR AS A MAJOR REPAIR. EO E175-53MR-014.2 SUPPLEMENTAL FOLLOW UP INSPECTIONS AREA THE SAME AS THE ORIGINAL REPAIR UNDER DISPOSITION IC2009-170/06539B & WILL BE CONTINUED ON THE ORIGINAL EO E175-53MR-014.1 TRACKING EVENTS SET. REFERENCE EXTERNAL SDE, EDDY CURRENT, THRESHOLD TOGETHER WITH THE NEXT SSI SCHEDULED INSPECTION, INTERVAL OF 40,000FC. THERE IS NO SPECIFIC TASK IN MPG & MRBR REVISION 10 THAT COVERS THIS REQUIREMENT. THRESHOLD IS COUNTED SINCE THE REPAIR ACCOMPLISHMENT. ACCOMPLISHMENT OF THIS MAJOR REPAIR IS ON EO E175-53MR-014.2 UNDER WO 1915058.