As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SFO - INFLIGHT T1907 SMOKE IN CABIN REPORTED SOON AFTER TAKEOFF. TURNED RECIRCULATION FAN OFF AND NO SMOKE VISIBLE. RETURNED TO SFO AND LANDED WITHOUT INCIDENT. FOUND RT PACK LEAKING OIL. REPLACED RIGHT HAND COALESCER BAG. SYSTEM GROUND CHECKED NORMAL OPERATION.