What was found
INITIAL INSPECTION: CORROSION ON SIDE SEAT RAILS IN SECTIONS [ FS= 847 + 32 TO FS= 907, STGR 15LH ] [ FS= 907 TO FS= 969, STGR 15LH ] AT PAX CABIN. (CPAX) (TCI: 53-20-233). COMPLETE: DUE TO EXCESSIVE COMBINATION OF CORROSION DAMAGE ON SIDE SEAT RAILS IN SECTIONS [ FS= 847+32 TO FS= 907, STGR 15LH ] [ FS= 907 TO FS= 969, STGR 15LH PER CRJ-900 SRM 53-51-49, SIDE SEAT RAILS WERE REPLACED PER AMM 53-00-49.