What was found
(CAN) WINDSHELD CRACKED / CRAZED DURING CRUISE FLIGHT. THE CREW LOWERED CABIN PRESSURE, DISCOUNTINUED HEAT AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND THE INNER LAMINATE LAYER OF THE WINDSHIELD PRC SEALED TO THE WINDOW FRAME STRUCTURE WHICH PREVENTED FREE FLOATING OF THE WINDSHIELD WITHIN THE WINDOW FRAME CREATING STRESS TO THE INNER LAMINATE LAYER WHICH-EVENTUALLY CRACKED. A NEW WINDSHIELD ASSY WAS INSTALLED.