As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH INTO DTW, SLAT DISAGREEMENT LIGHT REMAINED ON AFTER SLATS WERE EXTENDED FOR LANDING. NO ABNORMAL ROLL WAS NOTICED. CAPTAIN DECLARED AN EMERGENCY AND ACCOMPLISHED A SUCCESSFUL 'FLAP ONLY' LANDING. REPLACED THE SLAT RETRACT SWITCHES AND SLAT CONTROL LEVER SWITCH. OPERATIONAL CHECK OK. AIRCRAFT RETURNED TO SERVICE.