As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CLIMB THE F/O`S SIDE WINDOW ELEMENT WAS GLOWING ORANGE AND SEVERAL WHITE FLASHES WERE NOTICED. THE R2 WINDOW HEAT WAS TURNED OFF AND ALL VISIBLE INDICATIONS CEASED. FLIGHT CONTINUED. TECH OPS PERFORMED WINDOW HEAT OPS TEST IAW AMM 30-40-00 AND CONFIRMED ELECTRICAL ARCING. RESISTANCE OF BOTH PRIMARY AND SECONDARY WINDOW SENSORS WAS CHECKED AND FAILED IAW THE AMM. F/O`S WINDOW WAS REPLACED.