What was found
(CAN) DURING CRUISE AT FL200 APPROX 100 NM FROM DESTINATION, SPARKS OCCURED WHEN WINDSHIELD HEAT WAS SELECTED TO "NORMAL". WINDSHIELD HEAT WAS SELECTED OFF IMMEDIATELY. AS A RESULT OF THIS, WINDSHIELD BECAME MISTY. SO WINDSHIELD HEAT WAS SELECTED TO LOW POWER "WARM UP" MODE AND APPROXIMATELY 10 SECONDS AT `WARM UP`, THE PILOT SIDE WINDSHIELD SHATTERED WITH A SUDDEN NOISE. QRH ACTIONS COMPLETED TO `DESCEND TO 14000 FT. ACFT MADE A NORMAL LANDING AT DESINATION AIRPORT WITHOUT INCIDENT. MX REMOVED AND REPLACED THE PILOT SIDE WINDSHIELD. ACFT RETURNED TO SERVICE.