As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT SIDE WINDOW ILLUMINATED ON EICAS DURING CRUSE FLIGHT. PERFORMED OPS CHECK IAW AMM 30-41-00. PERFORMED BITE TEST ON RT SIDE WINDOW HEAT CONTROL UNIT. NO FAULTS FOUND IN EITHER TASK. COULD NOT REPLICATE ON GROUND. OPS CHECK GOOD AT THIS TIME.