What was found
MAIN CABIN SEAT TRACK RBL 24 CORROSION FROM STA 1180 TO 1280 (OUT OF LIMITS). REMOVED SEAT TRACK IAW SRM 51-40-02, FABRICATED NEW SEAT TRACK P/N 1520-792 IAW SRM 53-60-52, 51-10-02. INSTALLED SEAT TRACK STA 1180-1280, RBL 24, IAW SRM 51-40-02. MAJOR REPAIR.