As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANTS IN THE REAR OF THE AIRCRAFT SMELLED SOMETHING BURNING DURING DESCENT. WE SMELLED NOTHING UP FRONT, SMELL WENT AWAY BEFORE LANDING, DID NOT TURN THE PACKS OFF SINCE IT WHENT AWAY DESCRIBED AS CONTINUED ON LOG 3342125-2-PERFORMED TSM 05-50-00-810-831-A UNABLE TO DUPLICATE SMELL ON GROUND. FOUND SMELL TO BE MISCELLANEOUS (TYPE 10).