As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4306 THE FLIGHT ATTENDANT REPORTED THAT UPON DESCENT TO ORD SHE NOTICED THE AFT CABIN GOT HOT AND SAID SHE DETECTED A FAINT BURNING ELECTRICAL ODOR. THE AIRCRAFT WAS REMOVED FROM SERVICE. PERFORMED GENERAL VISUAL INSPECTION OF CABIN COMPARTMENT LIGHTS. CYCLED ELECTRICAL POWER. RAN APU WITH BOTH PACKS ON. COULD NOT DUPLICATE. NO DEFECTS FOUND. THE AIRCRAFT WAS RETURNED TO SERVICE.