What was found
DURING CRUISE FLT TRI-ATL, LEFT ENGINE LOST OIL PRESSURE AT 12,000 FEET MSL. CCAS AND LOCAL ALERTS ACTIVATED. LEFT ENGINE WAS SHUT DOWN PER THE QRH, FLIGHT CONTROL AND MAINTENANCE CONTROL WERE NOTIFIED. AN EMERGENCY WAS DELCARED AND FLIGHT CONTINUED TO THE NEAREST SUITABLE AIRPORT (ATL) WHERE LANDING WAS MADE SAFELY WITHOUT FURTHER INCIDENT. ATL MAINTENANCE FOUND PCU TRANSFER TUBE O-RINGS CUT. REMOVED AND REPLACED LEFT PCU TRANSFER TUBE AND O-RINGS. OPERATIONAL AND LEAK CHECKS WERE GOOD IAW/MM. AIRCRAFT WAS RELEASED FOR FURTHER SERVICE. (M)