What was found
(CAN)ON CLIMB OUT A LOUD BANG WAS HEARD AND EASILY DISCOVERED AS THE FRONT WINDOW ON THE PILOTS SIDE WHICH HAD CRACKED APPROXIMATELY 90 PERCENT ACROSS. PRIOR TO THIS OCCURRENCE THE AIRCRAFT HAD FLOWN THROUGH HEAVY RIME ICING CONDITIONS, DURING WHICH HIGH HEAT HAD BEEN APPLIED TO MELT THE ICE. THE WINDOW WAS ALSO NOTED TO HAVE DELAMINATED TO CERTAIN PORTIONS AROUND THE EDGES. PRESSURIZATION WAS REDUCED TO 4 PSI AND THE AIRCRAFT MADE AN UNEVENTFUL LANDING AT DESTINATION.