As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 793 EN-ROUTE, EXTRACT FAULT, SMELLED BURNING SMELL & VIBRATION ON FLOOR. SMELL WENT AWAY AFTER TURNING OFF EXTRACT. SMELL CAME BACK ON DESCENT. R & R EXTRACT FAN IAW AMM 21-26-51-400-001-A. OPERATIONS CHECKED GOOD IAW AMM21-26-00-710-001A.