What was found
SEAT TRACK AT BS 440, RBL 24.5, FLANGE IS WORN. CHECKED LIMITS OF SEAT TRACK AT BS 440, RBL 24.5, IAW SRM 53-00-52, DETAIL 7, FIG 101 AND FOUND TO BE OUT OF LIMITS; L=1 INCH, W=.5 INCH, D=.035 INCH. REMOVED SEAT TRACK AT BS 440-640, RBL 24.5, IAW SRM 51-40-02. RECEIVED NEW SEAT TRACK BATCH NR 0001541987, 201 INCH LONG, IAW SRM 51-10-02. TRIMMED AND LOCATED HOLES IAW SRM 51-40-02. TREATED AND PRIMED IAW AMM 51-21-00-7. INSTALLED NEW SEAT TRACK FROM BS 440-640, RBL 24.5, IAW SRM 51-40-02. THIS REPAIR IS CLASSIFIED AS A CAT "A" MAJOR REPAIR.