As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BNA - INFLIGHT BOS-DFW. CAPTAIN REPORTED OIL FILTER BYPASS MESSAGE AND THE RIGHT ENGINE LOST OIL QUANTITY. CAPTAIN SHUT DOWN RIGHT ENGINE SINGLE ENGINE TIME WAS 30 MINUTES. EMERGENCY DECLARED, LANDED BNA WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED RIGHT ENGINE. SYSTEM GROUND CHECK NORMAL OPERATION.