What was found
INITIAL INSPECTION: CORROSION ON SIDE SEAT RAILS IN SECTIONS [ FS= 669 TO FS= 720, STGR 15LH/RH ] AT PAX CABIN. (CPAX) (TCI: 53-20-217)
CORROSION LEVEL 2. SIDE SEAT RAILS IN SECTIONS [ FS= 669 TO FS= 720, STGR 15LH/RH ] AT PAX CABIN WERE REPLACED PER CRJ 900 AMM 53-00-49-400-801 A12.