As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INITIAL INSPECTION: CORROSION ON SEAT SIDE RAIL SECTION FS847+16 TO FS913, FS913 TO FS969 LH SIDE RAIL AT PASSENGER CABIN. (SM) (CPAX) (TCI 53-20-301) SEAT SIDE RAIL SECTION FS847+16 TO FS913, FS913 TO FS969 LH SIDE RAIL AT PASSENGER CABIN WERE REPLACED PER CRJ-900 AMM 53-00-49-400-801-A12.