What was found
"INITIAL INSPECTION: CORROSION ON FLOOR SEAT RAILS IN SECTIONS [ FS= 677 TO FS= 847+16, 9LBL/RBL ] AND [ FS= 847+16 TO 977, 9LBL/RBL ] AT PAX CABIN. (CPAX) (TCI: 53-20-233) " "CORROSION LEVEL 2. FLOOR SEAT RAILS IN SECTIONS [ FS= 677 TO FS= 847+16, 9LBL/RBL] [ FS= 847+16 TO 977, 9LBL/RBL ] AT PAX CABIN. WERE REPLACED PER CRJ900 AMM 53-00-49-400-801-A12 "