What was found
THIS EO IS BEING ISSUED TO PROVIDE INSTRUCTIONS TO ACCOMPLISH A PERMANENT REPAIR OF CORROSION DAMAGE TO THE CENTER FUSELAGE I FLOOR STRUCTURE AND RT INBOARD SEAT TRACK P/N 170-67861-003 BETWEEN FR23 AND FR26 (REF ETD2017-170-042352 FIGURE 1 FOR DAMAGE LOCATION). ACCOMPLISHMENT OF THIS TRACK SPLICE REPAIR WILL BE PER ETD2017-170-042352 AND SRM PART II 53-00-10/REPAIR 01P. THE SPLICING WILL BE BETWEEN FR27 AND FR28 ON THE RT IB SEAT TRACK. THIS EO HAS BEEN CLASSIFIED AS A MAJOR REPAIR BECAUSE THE SEAT TRACKS ARE PSE’S AND THIS EO IS RESTORING STRENGTH.