As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VENT EXTRACT FAULT IN FLIGHT CREATING STRONG BURNING FUMES IN FLIGHT NO SMOKE ASSOCIATED ( EXTRACT FAN VENT AVNCS SYS FAULT NOT DISPLAYED )-REMOVED AND REPLACED EXTRACT FAN (18HQ) IAW AMM 21-26-51. OPS CHECK GOOD AT THIS TIME. THIS CLEARS DMI, PLACARD REMOVED.