What was found
INITIAL INSPECTION: CORROSION ON SIDE SEAT RAILS IN SECTIONS [ FS= 677 TO FS= 720, STGR 15LH/RH ] [FS= 744 TO FS= 761, STGR 15LH/RH ] [ FS= 785 TO 847+16, STGR 15LH/RH ] [ FS= 847+16 TO FS= 906, STGR 15LH ][FS= 847+16 TO FS= 865, STGR 15RH ] AT PAX CABIN. (CPAX) (TCI: 53-20-23. COMPLETE: SUMMARY. SIDE SEAT RAILS IN SECTIONS [ FS= 677 TO FS= 720, STGR 15LH/RH ] [ FS= 744 TO FS= 761, STGR 15LH/RH ] [ FS= 785 TO 847+16, STGR 15LH/RH ] [ FS= 847+16 TO FS= 906, STGR 15LH ] [ FS= 847+16 TO FS= 865, STGR 15RH ] AT PAX CABIN WERE REPLACED PER CRJ900 AMM 53-00-4.