As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT THE PILOT HEARD A NOISE FROM THE ENG WITH AN ASSOCIATED ACFT YAW. THE TORQUE OF THE ENG FELL BELOW THE OPPOSING ENG FOLLOWED BY A CHIP CAUTION ON THE CAD. THE ENG THEN TORQUE INDICATION CAME BACK TO MATCH THE OPPOSING ENG. UPON POST FLIGHT WALK AROUND THE PILOT NOTICED OIL COMING FROM THE TURBINE AREA OF THE ENG, N1=3429, N2=9101.