As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 2970 THE CREW REPORTED AN UNKNOWN ODOR IN THE COCKPIT. THE AIRCRAFT WAS REMOVED FROM SERVICE. FOUND TERMINAL END ON BUS TIE RELAY LOOSE. REPLACED BOLT AND WASHERS AND NUT IAW MM 24-60-01 AND COMPLIED WITH OPERATIONAL CHECKS IAW 24-60-00. OK FOR SERVICE. THE AIRCRAFT WAS RETURNED TO SERVICE.