What was found
THIS EO IS BEING ISSUED TO PROVIDE INSTRUCTIONS TO ACCOMPLISH THE PERMANENT REPAIR OF CORROSION DAMAGE TO THE CROSSBEAM FRAME 17 UPPER FLANGE, REF ETD2015-170-071373, & FIGURES FOR DAMAGE DIMENSIONS & LOCATIONS, 3.0 INCHES X .50 INCH X .095 INCH. REQUESTED & RECEIVED A REPAIR IN THE FORM OF ETD2015-170-071373 FOR THE ACCOMPLISHMENT OF THE REPAIR ANGLE APPROVAL. THE FLOOR CROSSBEAM FRAME 17 IS PSE & FCS, ACCOMPLISHMENT OF THIS EO HAS BEEN CLASSIFIED AS A MAJOR REPAIR. FOLLOW UP INSPECTIONS WILL BE ACCOMPLISHED ON EO E175-53MR-203.1 IAW ANAC DER FORM ATTACHED. REF TASK 53-10-027-0001, INTERNAL GVI THRESHOLD OF 25,202 FC, INTERVAL OF 25,202FC, IS SUFFICIENT & IS MET USING THE INSPECTION REQUIREMENTS, MPG & MRBR REVISION 10. THRESHOLD IS COUNTED SINCE NEW. ACCOMPLISHMENT OF THIS MAJOR REPAIR WAS ON EO E175-53MR-203 UNDER WO 1942236.