As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, CREW AND PASSENGERS SMELLED BURNING RUBBER ODOR. THE CREW DECLARED AN EMERGENCY, DIVERTED TO NEAREST FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT, PERFORMED CHECKS IAW THE AMM AND COULD NOT DUPLICATE THE ODOR. THE ACFT WAS RELEASED FOR SERVICE.