What was found
RH SLAT TRACKS 1-1, 1-3, 2-1, 2-2, 3-1, 3-2 AND 3-3 FOR THE RH WING SLAT #1, #2 AND #3 WERE FOUND TO HAVE CORROSION DAMAGE ON LOWER SURFACES AS SHOWN IN FIGURES 1 THRU 3. PERFORM PERMANENT REPAIR IAW CRJ7/9 STRUCTURAL REPAIR MANUAL (SRM) CRJ900 ILLUSTRATED PARTS CATALOG (IPC) 27-81-41, FIGURE 01, ITEMS 45, 85, AND 105 (REV. 70 DATED 10 AUG 2021).