What was found
UPPER CABIN SEAT TRACK FS 1320 TO 1540, LBL 24.75 HAS SCRATCHES AND TOOL MARKS WITH CORROSION IN NUMEROUS AREAS. REMOVED SEAT TRACK . FABRICATED NEW SEAT TRACK TRAV NR T10/816708. INSTALLED SEAT TRACK F/S 1320-1540, LBL 24.75, IAW SRM 51-10-02, 53-00-52, 51-40-02, 51-20-01, REPAIR IS CLASSIFIED AS MAJOR REPAIR.