What was found
AIR TURN BACK, AFTER TAKEOFF, EN ROUTE FOR SLC THE FIRST OFFICERS WINDSHIELD DELAMINATED, TURNED BACK AND LANDED WITHOUT FURTHER EVENT. MAINTENANCE REMOVED AND REPLACED THE FIRST OFFICERS WINDSHIELD IAW AMM 56-11-11. VENDOR DID NOT PERFORM FAILURE ANALYSIS OF WINDSHIELD, BELIEVES DAMAGE WAS CAUSED BY WATER INGRESSION.