As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ODOR OF AN OVERHEATING MOTOR WITH RECIRCULATION FAN ON, GOES AWAY WITH FAN OFF. PULLED AND COLARD CIRCUIT BREAKER 1 A5 , 2 A5. RAN RECIRCULATION FANS FOR TWO HOURS AND PERFORMED OPERERATIONAL TEST IAW AMM 21-22-10. ALL CHECKED GOOD NO ODOR NOTED AT THIS TIME. ALL MIX PROCEDURES COMPLIED WITH MOC53430.