As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION OF TC 57-540-140 DISCOVERED THAT THE LEFT #1-3 SLAT TRACK CANISTER BRACKET IS CRACKED. (MARKED) (C-CHECK RO 11/04/2021) COMPLIED WITH THE REPAIR AT LH WING SLAT TRACK 1-3 CANNISTER REF-CRJ-900 REO 670-57-42-577 REV -- DATE 2016-12-02. / COMPLIED WITH THE TASK 51-900-1002-SKY