As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SLAT TRACKS 3-1 (P/N: CC670-12072-7) AND TRACK 3-2 (P/N: CC670-12081-9) ON THE LH WING WAS FOUND TO HAVE CORROSION DAMAGE ON THE UPPER FACES. PERFORMED PERM REPAIR IAW CRJ900 ILLUSTRATED PARTS CATALOG (IPG) 27-81-41, FIGURE 10, ITEM15,AND 90 (REV. 70 DATED 10 AUG 2021 ).