What was found
(CAN) THE FLIGHT CREW OBSERVED THE LT HEATED WINDSHEILD DELAMINATE AND CRACK DURING FLIGHT. THEY CARRIED OUT THEIR EMERGENCY PROCEDURES AND LANDED AT THEIR POINT OF DESTINATION. MAINTENANCE REPLACED THE WINDSHEILD. NO REASON FOR THE FAILURE (IE IMPACT) COULD BE DETERMINED. THIS IS ONE OF MANY FAILURES OF THIS WINDSHEILD PN INCURRED BY THIS OPERATOR. MULTIPLE ATTEMPTS TO CONTACT THE MFG HAS RESULTED IN NO RESPONSE. (TC NR 20070403002)