As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 666 CA SIDE L-FWD WINDOW ARCING WITH WINDOW HEAT SWITCH ON. CORRECTIVE ACTION: SWAPPED WINDOW TEMP CONTROL SENSOR AND SPARE SENSOR. DID BIT/VERIFIY TEST ON WINDOW HEAT CONTROL UNIT ARCED IN UPPER LEFT CORNER OF L1 WINDOW. REMOVED & REPLACED L1 WINDOW IAW MM 56-11-01 401. (4746290)