As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE IN CABIN RIGHT PACK TURNED OFF, SMOKE CLEARED. ENGINES CHECK OK PER MM 72 PACK CHECK OK PER MM 21. UNABLE TO LOCATE SOURCE. CREW REPORTED OIL SMELL IN CABIN, NOT NOTICED IN COCKPIT. UNABLE TO LOCATE SOURCE THROUGH EXTENSIVE TROUBLESHOOTING. (M)