As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AWR; [TASK R53520 STEP 7]; CORROSION ON FLOOR SEAT RAIL IN SECTIONS [FS= 349 TO FS= 409, 9RBL] AT PAX CABIN FWD WET AREA. (W1) (CPAX). SIDE SEAT RAIL BTW SECTIONS FS349 TO FS409 AND 9RBL WERE REPLACED FOR NEW ONES PER CRJ-900 AMM 53-00-49-000-801 (CONFIG A07). CORROSION LEVEL 2.