What was found
DURING C-CHECK, DISCREPANCY AS FOLLOWS, 3891, FR18 - FR26.5 RBL 38 INCH MAIN CABIN SEAT TRACK CORRODED BEYOND LIMITS IAW SRM 51-40-11. REMOVED SEAT TRACK FROM FR18 - FR26.5 AT RBL 38 INCH IAW SRM 51-30-30. REPLACED SEAT TRACK IAW SRM 51-10-40. INSTALLED NEW SEAT TRACK FROM FR18 - FR26.5 AT RBL 38 INCH IAW SRM 53-10-10 / 51-10-40. TREATED AND PRIMED AND APPLY POLYWHITE IAW SRM 51-40-10 AND A-300 51-40-12. MATERIAL USED 60-22457, PO NR 24302234.