What was found
FLIGHT 6302 - CVG-XNA - AT CRUISE FLIGHT, FL310, WINDSHIELD ANTI-ICE FAIL WITH NO ASSOCIATED MESSAGES. SOON AFTER, CAPTAIN SIDE AIRSPEED AND ATTITUDE FAILED, AUTOPILOT FAIL, IC WOW INOP. NO ANTI-ICE, SPS ADV MESSAGE ON EICAS. DECLARED EMERGENCY. MAINTENANCE FOUND STATIC DRAIN TRAPS FULL OF WATER. PERFORMED OPS CHECK OF AUTOPILOT, IC 600, PITOT HEAT, ADC, AND WINDSHIELD, ALL OPS CHECK NORMAL.