What was found
EN ROUTE TO ATL, LEFT ENGINE OIL PRESSURE DROPPED TO 0 PSI. CAPTAIN PERFORMED ENGINE FAILURE IN FLIGHT CHECKLIST, DECLARED AN EMERGENCY, AND PERFORMED A SAFE SINGLE ENGINE LANDING AT CSG. MCN MAINTENANCE CREW FOUND NR 3/4 BEARING OIL TUBE CRACKED. MAINTENANCE REMOVED AND REPLACED THE LEFT ENGINE ASSEMBLY AND OIL COOLER. PROPELLER ACTUATOR WAS ALSO REPLACED DUE TO METAL CONTAMINATION. TEARDOWN REPORT SHOWS ACCESSORY GEARBOX DRIVE FRACTURED BELOW THE SPLINES. (M)