As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ODOR OIL SMELL - PUNGENT OILY SMELL NOTICED IN COCKPIT/CABIN AT LOW POWER SETTINGS/SPEEDS AT LOW ALTITUDES DURING DESCENT. APU WAS NOT RUNNING.**WAITING FOR SUPPLEMENTAL (RESOLUTION) INFORMATION. **SUPPLEMENTAL(RESOLUTION) INFORMATION - ACCOMPLISHED NJA ENVIRONMENTAL CONTROL SYSTEM (ECS) DUCT BURN OUT TASK CARD TC-680-21-120905M. ALL CHKS GOOD.