What was found
DURING THE B6 BASIC CHECK AT EAMS, CORROSION WAS FOUND ON THE UPPER FLANGE OF THE CENTER FUSELAGE III LH IB SEAT TRACK (P/N 170-86081-005) AT FR84. THE DAMAGE TO THE UPPER FLANGE CAN BE REPAIRED BY SRM PART II 53-23-10 REPAIR 04 BY REMOVING THE DAMAGE AND INSTALLING A REPAIR DOUBLER. BECAUSE THE FLOOR TRACK IS A PSE, ACCOMPLISHMENT OF THIS EO HAS BEEN CLASSIFIED AS A MAJOR REPAIR DUE TO STRENGTH RESTORATION. SUPPLEMENTAL FOLLOW-ON INSPECTIONS OF THIS NEW REPAIR ARE NOT REQUIRED PER SRM PART II 53-23-10 REPAIR 04. EO E175-53MR-474 IS BEING ACCOMPLISHED UNDER WO 2807341 .