What was found
INITIAL INSPECTION: CORROSION ON FLOOR SEAT RAILS IN SECTIONS [FS= 693 TO FS= 830, 9LBL/9RBL ] [FS= 830 TO FS=849, 9LBL/9RBL ] [FS= 849 TO 977, 9LBL/9RBL ] AT PAX CABIN. (CPAX) (TCI: 100-20). COMPLETE: SUMMARY. FLOOR SEAT RAILS IN SECTIONS [ FS= 693 TO FS= 830, 9LBL/9RBL ] [ FS= 830 TO FS= 849, 9LBL/9RBL ] [ FS= 849 TO 977, 9LBL/9 RBL ] AT PAX CABIN WERE REPLACED PER CRJ900 AMM 53-00-49-400-801-A07 .