As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A RETURN-TO-BASE LEG IN LEVEL CRUISE THE MED CREW NOTED A MILD BURNT ELECTRICAL SMELL COMING FROM THE AIR-CONDITIONER VENTS. THE PILOT TURNED OFF THE AIR-CONDITIONER AND THE SMELL DISSIPATED. UPON EVALUATION BY MAINTENACE THE AFT BLOWER MOTOR WAS INOP. THE MOTOR WAS REPLACED THE AC WAS RETURNED TO SERVICE.