As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OIL PUMP SEIZED ON START-UP. NO SHEAR SHAFT WAS INCORPORATED IN OIL PUMP. SEIZURE CAUSED DAMAGE TO PUMP DRIVE RING GEAR TEETH INSIDE TRANSMISSION ASSY AS WELL AS OIL PUMP ASSY. IF SHEAR SHAFT WAS INCORPORATED IN OIL PUMP, ONLY PUMP WOULD HAVE NEEDED CHARGING IN THIS CASE, NOT PUMP AND TRANSMISSION.