As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 4373 - CREW REPORTED A PLASTIC BURNING SMELL IN-FLIGHT. FLIGHT ATTENDANT REPORTED SMELL WAS NOT EVIDENT IN CARGO OR CABIN AREA. THE SMELL WAS NOTICED WITH LEVEL 2 ICE PROTECTION TURNED ON. MAINTENANCE FOUND A BURNED TERMINAL ON FIRST OFFICER'S SIDE WINDSHIELD. WINDSHIELD REMOVED AND REPLACED. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (X)