As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FA REPORT SMELL OF BURNING RUBBER DECENDING THRU 1200FT RAY FUME PROCEDURE FA SAID SMELL INPROUVE AFTER TURNING PACK 2 OFF -PERFORMED TROUBLESHOTING ACTION PER TSM 05-50-00-810-831-A FOR ID OF THE CAUSE FOR CABIN ODOR FOUD THE SOURCE TO BE COMING FROM PACK 2 REF LOG PAGE # 3258521 FOR CONTINUE WORK