As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BURNING RUBBER SMELL REPORTED BY FLIGHT ATTENDANT BEGINNING AT INITAL DESCENT AND CONTINING TO LANDING FROM ROW 14 AND BACK. ACCOMPLISHED TSM 05-50-00-810-831 PERFORMED APU OPS CHECK ALSO ISO #1 ENG AND #2 ENG BLEED SYSTEM,COUL NOT DUPLICATE SMELL ALL CHECKS GOOD A/C OK FOR SERVICE ALSO USED AMM 70-00-00 AND AMM 49-00-00