What was found
THIS EO IS BEING ISSUED TO PROVIDE INSTRUCTIONS TO ACCOMPLISH THE PERMANENT REPAIR OF CORROSION DAMAGE TO THE FWD CABIN FLOOR STRUCTURE LT FWD SEAT TRACK, PN 170-03264-001, AT CROSSBEAM FRAME 16 & 19. THE APPROX DAMAGE DIMENSIONS ARE AS FOLLOWS, FRAME 16, 2.0 INCHES X 1.0 INCH TO A MAX DEPTH OF .024 INCH DEEP. FRAME 19, 1.30 INCHES X 1.10 INCH TO A MAX DEPTH OF .035 INCH DEEP. THE LT SEAT TRACK IS NOT CLASSIFIED AS FCS IN FCSD-3575, BUT IS CLASSIFIED AS PRIMARY STRUCTURE IN SRM PART II 51-00-04. ACCOMPLISHMENT OF THIS EO HAS BEEN CLASSIFIED AS A MAJOR REPAIR DUE TO STRENGTH RESTORATION OF PRIMARY STRUCTURE. ACCOMPLISHMENT OF THIS MAJOR REPAIR WAS ACCOMPLISHED ON EO E170-53MR-030 UNDER WO 2040524.