What was found
FLT 8258 - EN ROUTE ADF-ATL, LEFT ENGINE OIL PRESSURE DROPPED TO 45 PSI. CREW SHUT DOWN THE LEFT ENGINE, DECLARED AND EMERGENCY AND DIVERTED TO BNA WHERE LANDING WAS MADE SAFELY AND WITHOUT FURTHER INCIDENT. A DELTA MECHANIC INSPECTED THE ENGINE AND FOUND NO LEAKS BEFORE OR AFTER SERVICING THE ENGINE WITH 6 QUARTS OF OIL. UPON RETURN TO ATL, THE ENGINE WAS REINSPECTED AND FOUND TO BE AT THE ADD 1 QUART LEVEL. NO EXTERNAL LEAKS WERE NOTED. (M)