As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT, TORQUE YAW WAS EXPERIENCED ALONG WITH TOT RISES TO 890 DEGREES CELSIUS. TORQUE WAS REDUCED TO 60 PERCENT AND TOT STABILIZED TO 800 DEGREES CELSIUS. PILOT RETURNED TO OIL PLATFORM WHERE HE SAFELY LANDED. INSPECTION OF ENGINE REVEALED NR 1 NOZZLE (ON CONDITION PART) HAD FAILED.