As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AN EXCESSIVE OIL LEAK AT TURBINE/GEARBOX JOINT WAS DISCOVERED DURING A DAILY INSPECTION. FURTHER INVESTIGATION SHOWED THE GEARBOX FLANGE APPEARS TO BE CRACKED. THE ENGINE GEARBOX WAS REPLACED AND SENT FOR REPAIRS. THE GEARBOX TSO 4552.9 AND TSN 11,440.5.