What was found
EN ROUTE VLD-ATL - RIGHT ENGINE OIL PRESSURE BEGAN TO FLUCTUATE BETWEEN 45 AND 60 PSI. CREW REDUCED POWER AND THE OIL PRESSURE SETTLED AT 55 PSI. CREW DECLARED AN EMEGENCY AND DIVERTED TO MCN, WHERE LANDING WAS MADE SAFELY AND WITHOUT FURTHER INCIDENT. MCN MAINTENANCE REMOVED AND REPLACED THE RIGHT ENGINE PCU O-RING. OPERATIONAL AND LEAK CHECKS WERE GOOD AND THE AIRCRAFT WAS RELEASED FOR FURTHER SERVICE. (M)