As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FORWARD RECIRCULATION FAN IN AMBER ON CONDITION PAGE. ASO HAD A ELECTRICAL BURNING SMELL. MAINTENANCE FOUND LEFT RECIRCULATION FAN 15HG SEIZED AND EVIDENCE OF A BURNING SMELL. THE FAN WAS CONFIRMED TO BE THE SOURCE OF THE ODOR AND WAS REPLACED PER AMM 21-21-51 AND A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.