What was found
THE AIRCRAFT WAS GROUNDED. F/O WINDOW ARCING; LOWER FWD CORNER DELAMINATED, FRACTURED, OVERHEATING. THE FLIGHT DECLARED AN EMERGENCY AND DIVERTED TO LAX WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND FORWARD WINDOW SEAL LOOSE AND FLAPPING ON F/O'S SIDE WINDOW. CLEANED F/O SIDE WINDOW WITH ALCOHOL. WINDOW CLEANED CLEAR. IAW AMM 30-41-11 WINDOW HEAT CONTROL UNIT SYSTEM TEST GOOD. NO EVIDENCE OF ARCING OR DELAMINATION. INSPECTED F/O NR 1 WINDSHIELD PER AMM56-11-00-200-803. REPAIRED THE O/B VERTICAL PREMOLDED SEAL AND AERODYNAMIC SMOOTHER PER AMM56-11-00-300-801. CKS OK.