As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGT 2416 - EWR - FLIGHT CREW REPORTED WING ANTI ICE FAIL IN ICING CONDITIONS DURING CLIMB. CREW PERFORMED AIR RETURN AND LANDED UNEVENTFULLY. MX REMOVED AND REPLACED LT WING ANTI ICE DUCT THERMOSTAT AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY. ACFT WAS APPROVED TO RETURN TO SERVICE.