What was found
INITIAL INSPECTION: CORROSION ON FLOOR SEAT RAILS IN SECTIONS [ FS= 677 TO FS= 847+16, 9RBL ] AT PAX CABIN. (CPAX) (TCI: 53-20-217)
CORROSION LEVEL 2. FLOOR SEAT RAILS IN SECTIONS [ FS= 677 TO FS= 847+16, 9RBL ] AT PAX CABIN WAS REPLACED PER CRJ 900 AMM 53-00-49-400-801 A12.