What was found
SEAT TRACK GOUGED AND WORN AT STA 879 TO 900 RBL 45 BLENDED AERA , CHECKED LIMITS, FOUND OUT IAW SRM 53-00-52 FIG 101 DETAIL 1, ORIG MAT 225 , AFTER REWORK .203, EXCEEDS MAX MAT LOSS OF .004 , REMOVED SEAT TRACK CROWN STA 879 TO 900 RBL 45 IAW SRM 51-40-02, FABBED REPLACEMENT SEAT TRACK CROWN FROM MAT BAC 1520-841 IAW SRM 53-30-52 FIG 1 DETAIL IV INSTALLED NEW SEAT TRACK CROWN AT STA 879-900 RBL 45 IAW 51-40-02. MAJOR REPAIR.