As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE LOST 3-4 QUARTS DURING PREVIOUS FLIGHT. DURING INVESTIGATION OIL WAS FOUND TO BE COMING FROM THE HIGH PRESSURE FUEL PUMP DRAIN BETWEEN THE ENGINE AND FCU. FCU AND FUEL PUMP WERE REMOVED AND THE SEAL AT THE ENGINE DRIVE WAS FOUND TO HAVE MIGRATED COMPLETELY OUT OF ITS CARRIER AND LYING ON THE SHAFT. SEAL AND CARRIER WERE REPLACED AS WELL AS THE FCU AS A PRECAUTIONARY MEASURE AND THE ACFT RETURNED TO SERVICE.