As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNIT WAS INSTALLED WITH 8.6.1 HOURS. THE TURBINE WAS BINDING AND CAUSING OVERHEAT AND SMOKE IN THE CABIN. UNIT WAS REPLACED WITH AN AS REMOVED UNIT AND AN OPS CHECK WAS COMPLIED WITH. OIL LEVEL CHECK NO DEFECTS NOTED. THIS UNIT HAS LASTED OVER 150 HOURS AND IS STILL WORKING FINE. THIS WAS THE THIRD UNIT FROM THE SAME O/H SITE TO FAIL WITH UNDER 50 HOURS.