As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"INITIAL INSPECTION: CORROSION ON FLOOR SEAT RAILS IN SECTION [ FS= 349 TO FS= 477.40 9RBL ] AT PAX CABIN. (CPAX) (TCI: 53-20-243) SUMMARY: CORROSION LEVEL 2 ON FLOOR SEAT RAILS AT SECTION FS=349 TO FS=477.40 9RBL WAS REPLACED PER SRM 53-00-49-201-002-A01 AND AMM 53-00-49-400-801-A12.