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 FIGURES 1 & 2 FOR DAMAGE DIMENSIONS & LOCATIONS. REQUESTED & RECEIVED RELIEF IN THE FORM OF ETD2015-170-028904 FOR THE ACCOMPLISHMENT OF THE BLEND OUTS & CROSSBEAM FRAME 17 ANGLE REPAIR APPROVAL. BECAUSE THE FLOOR CROSSBEAM FRAME 17 IS A PSE. ACCOMPLISHMENT OF THIS EO HAS BEEN CLASSIFIED AS A MAJOR REPAIR. FOLLOW UP INSPECTIONS WILL BE ACCOMPLISHED ON EO E175-53MR-170.1 IAW ANAC DER FORM ATTACHED. INTERNAL DET INTERVAL OF 9,000 FC. THERE IS NO SPECIFIC TASK IN MPG & MRBR REVISION 10 THAT COVERS THIS REQUIREMENT. THE ACCOMPLISHMENT OF THIS MAJOR REPAIR WAS ON EO E175-53MR-170 UNDER WO 1894557.