As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED OIL LEAK IN FLIGHT AND OIL PRESSURE DECREASING ON THE RIGHT ENGINE. UPON INSPECTION MAINTENANCE DISCOVERED ONE STARTER MOUNT BOLT NUT MISSING. STARTER HAD BEEN REMOVED FOR OTHER MAINTENANCE 99.5 HOURS PRIOR. AIRCRAFT HAD GONE THROUGH ROUTINE INSPECTION 38.1 HOURS PRIOR. STARTER AND ADAPTER WERE REPLACED WITH NO FURTHER LEAKS NOTED.