What was found
DTW - FLT 634 - IN CRUISE CONFIGURATION, OBSERVED ARCING FOLLOWED BY A LARGE FLASH IN THE CAPTAIN'S WINDSHIELD. CAPTAIN'S WINDSHIELD CIRCUIT BREAKER'S TRIPPED. CORRECTIVE ACTION: MAINTENANCE REMOVED AND REPLACED THE CAPTAIN'S WINDSHIELD AND WINDSHIELD TEMP CONTROLLER. SYSTEM OPERATIONAL CHECKED IAW DC 9 MM, CHAPTERS 56-10, 30, 40. AIRCRAFT RETURNED TO SERVICE. (X)