What was found
EN ROUTE, THE CAPTAINS FORWARD WINDSHIELD BEGAN TO MAKE A POPPING SOUND, WINDOW CRACKED, DESCENDED TO LOWER ALTITUDE AND SLOWER SPEED FOR FEAR OF LOSING WINDOW, DIVERTED TO ONT. MAINTENANCE REMOVED AND REPLACED LT FORWARD WINDSHIELD IAW AMM 56-11-01, PG. 401. AS PRECAUTION, REPLACED WINDOW HEAT CONTROLLER LT FRONT IAW AMM 30-41-01, PG. 401. VENDOR FUNCTIONAL TEST OF WINDOW HEAT CONTROL S/N 107C-1046 WAS NO FAULT FOUND. UNIT PASSED BENCH TEST IAW HONEYWELL CMM 30-41-07, REV 12, AND WAS RETURNED TO SERVICE. VENDOR CONFIRMED FAILURE OF WINDSHIELD S/N 908AWCPT1, FAILURE ANALYSIS NOT ACCOMPLISHED, WINDSHIELD SCRAPPED AT VENDOR.