What was found
INITIAL INSPECTION: CORROSION ON FLOOR SEAT RAILS IN SECTIONS [ FS= 661+32 TO FS= 693, 9LBL/9RBL ] [ FS= 693 TO FS= 830, 9LBL/9RBL ] AT PAX CABIN. (CPAX) (TCI: 53-20-245)COMPLETE: DUE TO EXCESSIVE COMBINATION OF CORROSION DAMAGE ON SIDE SEAT RAILS IN SECTIONS [ FS= 661+32 TO FS= 693, 9LBL/9RBL ] AND [ FS= 693 TO FS= 830, 9LBL/9RBL PER CRJ-900 SRM 53-41-49,FLOOR SEAT RAILS WERE REPLACED PER AMM 53-00-49.