As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLIGHT THE AIRCRAFT EXPERIENCED SMOKE IN THE CABIN WHEN THE NR2 ENGINE BLEED AIR WAS SELECTED ON. WHEN THE BLEED AIR WAS SELECTED OFF THE SMOKE DISSIPATED. UPON LANDING INSPECTION FOUND THE OIL QUANTITY OF NR2 ENGINE 7 QUARTS LOW, WITH A MAJOR OIL LEAK EVIDENT. THE ENGINE AS REPLACED.