What was found
MAIN CABIN SEAT TRACK HAS CORROSION NUMEROUS SPOTS BETWEEN BS 540 TO 663.75 LBL 45. GROUNDED - YES. REMOVED CORROSION ON THE MAIN CABIN SEAT TRACK AT STA 540 - STA 663.75, LBL 45.50 IAW SRM 51-10-02. ORIGINAL THICKNESS 0.230, REMOVED 0.030, REMAINING THICKNESS 0.200, FOUND TO BE OUT OF LIMITS IAW SRM 53-00-52 AND BAC DWG 1520-2779. REMOVED SEAT TRACK AND ACCOMPLISHED A CATEGORY "A" REPAIR AT STA 540 - STA 663.75 IAW SRM 53-00-52-2R-2 AND EA 700-53EA-20991 REV 00.