As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, LOUD VIBRATION AND A SLIGHT BURNING ODOR APPEARED. TURNED THE BLOWER SWITCH TO OVERRIDE AND ALL PROBLEMS IMMEDIATELY DISAPPEARED. PERFORMED TSM TASK 24-00-00-810-823 AND NO DEFECTS NOTED. AIRCRAFT RELEASED IAW MEL 21-26-01. LATER DISCOVERED BLOWER FAN SEIZED. REPLACED BLOWER FAN IAW AMM 21-26-51-04, FAN OPERATION CHECKED GOOD.