As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUSPECTED BURNING RUBBE RY SMELL IN COCKPIT WHEN PACK 1 ON PACK TEMP 165 PACK 1 OFF SMELL LESS PILOT REPORTED PACK TEMP ON #1 165 PACK #2 115 RAN PACK ON BOTH ENG BLEED AIR AND APU BLEED FOUND TO BE OPERATING NORMAL PACK 1 WAS 165 PACK # 2 155 NO BURNING SMELL NOTE REF AMM 21-00-00 ADD EMP:1230991,16706