As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 4114 - IN CRUISE WINDSHIELD 1 HEAT FAILED. RETURN TO ORD FOR MAINTENANCE REPAIR. MAINTENANCE COMPLIED WITH ENGINEERING ORDER EM 3000-018, WINDSHIELD HEATING IMPROVEMENT. OPS CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)