As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 3302 - EN ROUTE FROM DTW TO AZO, THE LEFT WINDSHIELD HOT LIGHT ILLUMINATED. THE AIRCRAFT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. MAINTENANCE PERSONNEL REPLACED THE CAPTAINS WINDSHIELD HEAT CONTROLLER. ALL SYSTEMS OPERATED SATISFACTORILY. (M)