As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOI - WITH THE NR 2 BLEED SELECTED, THERE IS SOME SMOKE IN THE CABIN. INSPECTED THE NR 2 ENG INTAKE, NO OIL NOTED. REMOVED THE DRAIN PLUG ON THE NR 2 COOLING TURBINE AND DRAINED SOME EXCESS OIL. REINSTALLED THE PLUG. OPERATIONAL CHECK OF THE NR 2 BLEED AIR WAS NORMAL,AND AIRCRAFT WAS RETURNED TO SERVICE.