What was found
THIS EO IS BEING ISSUED TO PROVIDE INSTRUCTIONS TO ACCOMPLISH A PERMANENT REPAIR OF CORROSION DAMAGE TO THE FWD CABIN FLOOR STRUCTURE RT SEAT TRACK P/N 170-03263-001 AT THE FR14 CROSS BEAM. THE APPROXIMATE DAMAGE DIMENSIONS ARE 1.8 INCHES X 1.2 INCHES X 0.028 INCH DEEP (39% MATERIAL LOSS). THE RT SEAT TRACK IS NOT CLASSIFIED AS FATIGUE CRITICAL STRUCTURE (FCS), BUT IS CLASSIFIED AS PRIMARY STRUCTURE. ACCOMPLISHMENT OF THIS EO HAS BEEN CLASSIFIED AS A MAJOR REPAIR DUE TO STRENGTH RESTORATION OF PRIMARY STRUCTURE. SUPPLEMENTAL FOLLOW UP INSPECTIONS ARE NOT REQUIRED PER SRM PART II 53-10-10 REPAIR 01P. THIS PERMANENT REPAIR WILL BE ACCOMPLISHED ON WO 2227738.