As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ENROUTE CAPTAIN`S WINDSHIELD FROSTED OVER, C/B AC1 POPPED, RESET C/B, WINDSCREEN STILL NO HEAT. DUE TO LACK OF MAINTENANCE FACILITIES AT DESTINATION AIRCRAFT ELECTED TO RETURN TO DEPARTURE BASE FOR NORMAL LANDING. LT WINDSHIELD HEAT CONTROLLER REPLACED, AIRCRAFT RETURNED TO SERVICE.