As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 879 - EN ROUTE HPN-ORD, ON TAXI TO GATE, DETECTED SMOKE IN CABIN. TURNED OFF RECIRCULATING FANS AND TURNED TEMPERATURE CONTROL TO MANUAL FULL COLD. ARRIVED ORD GATE WITHOUT FURTHER INCIDENT. RAN BOTH PACKS WITH APU AIR AND ENGINE BLEED. CYCLED RECIRCULATING FANS. NO SMOKE OR ODOR NOTED. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)