As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNIT WAS INSTALLED AS AN OVERHAULED UNIT. WITH 21.1 HOURS ON THE UNIT. THE TURBINE WAS BINDING AND CAUSING OVERHEAT AND SMOKE IN THE CABIN. UNIT WAS REPLACED WITH AN O/H UNIT AND AN OPS CHECK WAS COMPLIED WITH. OIL LEVEL CHECK, NO DEFECTS NOTED. THIS WAS THE SECOND UNIT FROM THE SAME O/H SITE TO FAIL WITH UNDER 50 HOURS. (K)