What was found
PHX - AIR TURN BACK - FLT 570 - DURING TAKEOFF, CREW REPORTED FORWARD WINDSHIELD HEAT INOPERATIVE. RETURNED TO PHX AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE FORWARD FIXED WINDOW IAW AIRBUS MM 56-11-11-04, OPERATIONAL CHECKS WERE NORMAL. PRIOR TO AIR TURN BACK AND REPLACEMENT OF CAPTAINS WINDOW, WINDOW HEAT CONTROLLER WAS REPLACED IN PHX, FLT 285. WINDSHIELD WAS SCRAPPED AT REPAIR FACILITY.