What was found
THE LEFT COCKPIT WINDSHIELD INNER PANE CRACKED DURING CRUISE AS FL230, OAT WAS -40, WINDSHIELD HEAT WAS ON AT THE TIME, AIRCRAFT WAS NOT IN ICING CONDITIONS AT THE TIME, FLIGHT CONDITIONS WERE VFR. CREW LANDED WITH NO FURTHER INCIDENT. THE WINDSHIELD WAS CHANGED DUE TO THE CRACKS.