As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR DISAGREE DURING DESCENT INTO DTW ODI-GEAR-EXT-MECH-823AY-SDR FLT 4227-06 HTS-DTW DURING DESCENT INTO DTW THEY GOT A GEAR DISAGREE DURING EXTENSION. DECLARED EMERGENCY AND LANDED SAFELY IN DTW. C/W PA 05-018B, GEAR DISAGREE EVENT PROCEDURE.