What was found
DURING BASIC CHECK, INSPECTION DISCOVERED CORROSION DAMAGE ON THE CABIN SEAT TRACKS PN 170-27305-003 & 170-67861-005. PERMANENT REPAIRS BY REPLACEMENT IS ACCOMPLISHED IAW DWG LISTED IN TABLE 2 & SRM CHAPTER 51 PRINCIPLES, REF ATTACHED FIGURES IDENTIFYING THE GOUGE DAMAGE LOCATIONS & DIMENSIONS 2.9 INCHES X .80 INCH X .011 INCH, .9 INCH X .40 INCH X .013 INCH, 1.4 INCHES X .35 INCH X .011 INCH & 1.4 INCHES X .35 X .002 INCH. SINCE THE TRACK IS BEING REPLACED WITH LIKE PARTS, NO CHANGES TO THE INSPECTIONS IN THE EXISTING MX PROGRAM ARE REQUIRED. ENGINEERING HAS CLASSIFIED THIS REPAIR AS A MAJOR REPAIR. ALSO SUBMITTED SDR C77A20150806002 FOR PN 170-27305-003. ACCOMPLISHMENT OF THIS MAJOR REPAIR IS ON EO E175-53MR-204 UNDER WO 1942406.