As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AVIONIC FAN MAKING LOUD NOISE AND ELECTRICAL BURNING SMELL. BLOWER FAN AVIONICS VENTILATION) VENT AVIONICS SYSTEM FAULT NOT DISPLAYED. REMOVED AND REPLACED EXTRACT AND BLOWER FAN 20HQ, IAW AMM 21-26-51. OPERATIONS TEST GOOD. THIS ACTION CLEARS DMI 2750907-1 PLACARD. REMOVED DMI LOG PAGE UPDATED MOC NOTIFIED CB CLOSED.