As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORT: F/O'S SLIDING WINDOW ARCING SMOKING & GLASS SPIDER WEB CRACKING. C/B`S DID NOT POP HAD TO REMOVE ELEC POWER WITH WINDOW HEAT SWITCHES. FOUND WINDOW HEAT CONTROLLER FAILURE. REPLACED FO'S SLIDING WINDOW AND ASSOCIATED WINDOW HEAT CONTROLLER.