What was found
THIS EO IS BEING ISSUED TO PROVIDE INSTRUCTIONS TO ACCOMPLISH THE PERMANENT REPAIR OF CORROSION DAMAGE TO THE AFT CABIN FLOOR STRUCTURE RT AFT SEAT TRACK, PN 170-86082-005 AT FRAME 84 & Y=+260. THE APPROX DAMAGE DIMENSIONS ARE AS FOLLOWS, 4.0 INCHES X 1.250 INCH TO A MAX DEPTH OF .037 INCH DEEP & 3.20 INCHES X .350 INCH X .065 INCH. ACCOMPLISHMENT OF THIS PERMANENT TRACK SPLICE REPAIR WILL BE IAW ETD2016-170-031343 & SRM PART II 53-00-10 FIG 205. ACCOMPLISHMENT OF THIS EO HAS BEEN CLASSIFIED AS A MAJOR REPAIR DUE TO STRENGTH RESTORATION. THIS IS NOT CLASSIFIED AS FCS, BUT WILL REQUIRE FOLLOW UP INSPECTIONS. EO E170-53MR-033.1 WILL BE ISSUED TO ACCOMPLISH THE FOLLOW UP INSPECTIONS IAW FORM ATTACHED. REF TASK 53-23-005-0001, INTERNAL GVI, THRESHOLD OF 20,000 FC OR 26,600 FH, INTERVAL OF 5,099 FC OR 6,781 FH, IS SUFFICIENT & IS MET USING THE INSPECTION REQUIREMENTS, MPG & MRBR REVISION 11. ACCOMPLISHMENT OF THIS MAJOR REPAIR WAS ON EO E170-53MR-033 UNDER WO 2051193.