What was found
DURING C-CHECK, DISCREPANCY AS FOLLOWS, N/R 3883, BL 0 FR. 26 TO FR. 30 SEAT TRACK MAIN CABIN CORRODED OUT OF LIMITS IAW SRM 51-40-11. REMOVED SEAT TRACK FROM FR. 26 - FR. 30 AT BL 0 IAW SRM 51-30-30. REPLACED SEAT TRACK IAW SRM 51-10-40. INSTALLED NEW SEAT TRACK FROM FR. 26 - FR. 30 AT BL 0 IAW SRM 53-10-10 / 51-10-40. MATERIAL USED, P/N 60-22457, PO NR 24302234.