As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3265 THE CREW REPORTED, THEY SMELLED A BURNING RUBBER TYPE ODOR AND MADE THE DECISION TO RETURN FOR AN OVERWEIGHT LANDING. THE CREW DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. FOUND RECIRCULATION FAN NR 1 TO BE INOPERATIVE. REMOVED AND REPLACED LEFT RECIRCULATION FAN CONTACTOR K0189 REF EMB 145 AMM 21-24-03. THE AIRCRAFT WAS RETURNED TO SERVICE.