As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OPERATOR REPORTED BIG DROP IN OIL PRESSURE. REMOVED OIL FILTER AND FOUND STEEL AND ALUMINUM CHUNKS (LARGE). SOURCE OF METAL WAS FOUND TO BE CAUSED BY A FAILURE OF THE STARTER DRIVE GEAR AND THE ACCESSORY DRIVE GEARS. ALL THE ABOVE GEARS WERE MISSING TEETH AND/OR HEAVILY DAMAGED. THIS AIRCRAFT HAS A TOTAL TIME OF 16 HOURS.