What was found
THIS EO IS BEING ISSUED TO PROVIDE INSTRUCTIONS TO ACCOMPLISH THE PERMANENT REPAIR OF CORROSION DAMAGE TO THE CROSSBEAM FRAME 90 UPPER FLANGE & SIDES. REF FIGURES 1 -4 FOR CROSSBEAM FRAME 90 DAMAGE BLEND OUT DIMENSIONS. RECEIVED RELIEF IN THE FORM OF ETD 2015-170-021766 FOR THE BLEND OUTS & NESTED ANGLE REPAIR APPROVAL. BECAUSE THE FLOOR CROSSBEAM FRAME 90 IS A PSE, ACCOMPLISHMENT OF THIS EO HAS BEEN CLASSIFIED AS A MAJOR REPAIR DUE REPAIR STRENGTH RESTORATION TO CROSSBEAM FRAME 90. FOLLOW UP INSPECTIONS WILL BE ACCOMPLISHED ON EO E175-53MR-166.1 IAW ANAC DER FORM ATTACHED. TASK 53-23-005-0001 INTERNAL GVI INTERVAL OF 10,133 FC OR 13,476 FH IS SUFFICIENT & IS MET USING THE INSPECTION REQUIREMENTS, MPG & MRBR REVISION 10. ACCOMPLISHMENT OF THIS REPAIR WAS ON EO E175-53 MR-166 UNDER WO 1848039.