As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT REPORTED DURING CRUISE A ODOUR AND NOISE IN COCKPIT. A SLIGHT AMOUNT OF SMOKE WAS NOTICED IN WINDSHIELD AREA. PILOT PULLED CIRCUIT BREAKER FOR AVIONICS FAN AND NOISE STOPPED.PILOT RETURNED TO BASE AS PRECAUTION. SMELL DISSIPATED DURING RETURN TO BASE. BEARINGS ON MOTOR SHAFT FOUND TO BE WORN,CAUSING FAN TO RUB ON HOUSING.