What was found
MCD SEAT TRACK HAS NUMEROUS GOUGES APPROX BETWEEN STA 1180 TO STA 1280 AT RBL 25. BLENDED GOUGES IN SEAT TRACK IAW SRM 53-00-52. ORIGINAL MATERIAL THICKNESS; .250" /AFTER REWORK; .017"/ MATERIAL LOSS; .080". FOUND TO BE OUT OF LIMITS IAW SRM 53-00-52, PAGE 101/104, STEP E, DETAIL 7. REMOVED SEAT TRACK IAW SRM 51-40-02. MATERIAL ID OF NEW SEAT TRACK IS BAC 1520-792, PN 60-654924, BATCH NR 1541987, IAW SRM 53-60-52. LOCATED AND DRILLED SEAT TRACK IAW SRM 51-40-05. TREATED AND PRIMED IAW SRM 51-20-01. INSTALLED NEW SEATTRACK IAW SRM 51-40-02 AT BS 1180-1280, RBL 25. THIS REPAIR IS CLASSIFIED AS A CAT "A" MAJOR REPAIR.