As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
*CORROSION NOTED ON SEAT TRACK RAILS AT LBL 27 FROM FS349.00-FS477.00 (C-CHECK RO 5/22/2021) SEAT TRACK RAIL P/N SH690-32127-3 OF 27LBL AT FS349.00-FS477.00 WAS REMOVED AND REPLACED BY A NEW ONE P/N SH690-32127-3 IAW CRJ700 AMM 53-00-49-400-801-A03.