As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH, SLAT DISAGREEMENT LIGHT ILLUMINATED WITH ROLL TO THE RIGHT. CREW RECYCLED SLATS WITH SAME RESULTS. FLIGHT WAS RETURNED TO DTW AND LANDED WITHOUT INCIDENT USING FLAPS ONLY. MAINTENANCE FOUND THE RIGHT SLAT BINDING DUE TO RIGHT ANTI-ICE T-DUCT CRACKED. REPLACED THE DUCT, OPERATIONAL CHECK NORMAL.