What was found
DURING CRUISE, THE CAPTAIN`S FWD WINDOW BEGAN ARCING IN BOTTOM LEFT PART OF THE WINDOW. WINDOW HEAT WAS IMMEDIATELY TURNED OFF, AND A FEW SECONDS LATER, THE WINDOW SHATTERED. REMOVED AND REPLACED LT FWD WINDOW ASSY IAW AMM 56-11-01-401, AND M191 WINDOW HEAT CONTROL UNIT IAW AMM 30-41-01-401. LT FWD WINDOW RESTORED AND WINDOW ANTI-ICING SYSTEM OPS TEST PASSED. WINDOW ASSY.