As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING OUT AT 15,500 MSL ALTITUDE, RIGHT ENGINE OIL PRESSURE LOW ANNUNCIATOR LIGHT ILLUMINATED. RIGHT ENGINE OIL PRESSURE WAS 25 PSI AND OIL QUANTITY WAS ZERO. PRECAUTIONARY ENGINE SHUTDOWN IAW ENGINE SECURING CHECKLIST. RETURNED TO RDU. *S/D* FOUND RIGHT ENGINE MAIN OIL FILTER O-RING SEAL DAMAGED. REPLACED SEAL IAW DC9 MM 79-20-6, NO LEAKS NOTED.