As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF TO PERFORM MAINTENACE M/R TRACK AND BALANCE IT WAS REPORTED TO PILOT, BY ANOTHER AIRCRAFT, THAT HE HAD SMOKE TRAILING HIS AIRCRAFT. EMERGENCY PROCEDURES WERE PEREFORMED AND AIRCRAFT LANDED WITHOUT INCIDENT. THE SMOKE WAS DISCOVERED TO BE ENGINE OIL. COMPANY INVESTIGATION OF TURBINE ASSEMBLY FOUND THE FIRST STAGE NOZZLE SHIELD DOME ASSEMBLY FAILURE EXPOSING THE #8 ENGINE BEARING TO DIRECT COMBUSTION HEAT.