As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING DEPARTURE FROM AIRFIELD, FLIGHT CREW PASSING THROUGH 800 FT AGL NOTED THE TURBINE N2 SPEED INCREASING FOLLOWED BY A LOUD HUMMING NOISE. THEY THEN HAD AN ENGINE CHIP LIGHT. THEY LANDED THE ACFT IMMEDIATELY. UPON MAINTENANCE ARRIVAL IT WAS NOTED THAT A LARGE AMOUNT OF OIL LEAKING FROM THE TURBINE.