What was found
"INITIAL INSPECTION: CORROSION ON FLOOR SEAT RAILS IN SECTIONS [ FS= 373 TO FS= 485, 9LBL ] [ FS= 349 TO FS= 485, 9RBL ] AT PAX CABIN. (CPAX) (TCI: 53-20-243). ""FLOOR SEAT RAILS IN SECTIONS [ FS= 373 TO FS= 485, 9LBL ] [ FS= 349 TO FS= 485, 9RBL ] AT PAX CABIN. WERE REPLACED PER CRJ-900 AMM 53-00-49-400-801-A12 LEVEL CORROSION 2 "