What was found
CORROSION ON LT AISLE SEAT RAIL BETWEEN APPROXIMATELY FS 863.00 TO 977.00, AREAS MARKED. C-CHECK RO 10/17/2020. THE SEAT RAIL IS OUT OF LIMITS, PER CRJ700 SRM. REMOVED AND REPLACED WITH NEW SEAT RAIL P/N SH670-37420-7 AT RBL 9.0 FROM FS 863.00-FS 977.00, PER CRJ AMM USING TOOL TUC8605 CAL 02-JAN-20, DUE 31-JAN-21.