What was found
THIS EO IS BEING ISSUED TO PROVIDE INSTRUCTIONS TO ACCOMPLISH A PERMANENT REPAIR OF CORROSION DAMAGE DISCOVERED DURING BASIC CHECK AT EAMS ON THE RH IB SEAT TRACK (P/N 170-03263-001) UPPER FLANGE BETWEEN FR13 AND FR14 IN THE FORWARD CABIN FLOOR STRUCTURE. THE REPAIR DIRECTLY PER SRM PART II 53-10-10 /REPAIR 03 CANNOT BE PERFORMED IN THIS LOCATION DUE TO THE UNDERLYING PRODUCTION REINFORCEMENT. EAMS REQUESTED APPROVED DATA TO DEVIATE FROM THE SRM REPAIR AND RECEIVED ETD2019-170-155383-A TO PERFORM A CUTOUT AND DOUBLER REPAIR. THE RH SEAT TRACK BEAM IS NOT CLASSIFIED AS FATIGUE CRITICAL STRUCTURE (FCS), BUT IT IS CLASSIFIED AS PRIMARY STRUCTURE. ACCOMPLISHMENT OF THIS EO HAS BEEN CLASSIFIED AS A MAJOR REPAIR DUE TO STRENGTH RESTORATION OF PRIMARY STRUCTURE. EO E175-53MR-469 IS BEING ACCOMPLISHED UNDER WO 2795359