What was found
IN CRUISE FLIGHT, NR 2 ENGINE OIL FLUCTUATED BETWEEN 45-55 PSI, ASSOCIATED WITH NR 2 OIL PRESSURE WARNING LIGHT FLICKERING. PILOTS REDUCED POWER TO 60 PERCENT TORQUE AND THE OIL PRESSURE RETURNED TO NORMAL. THE ENGINE PROGRAM MANAGER WAS CONSULTED CONCERNING ENGINE LIMITATIONS, AIRCRAFT 328EN WAS WITHIN LIMITS PER PMM 05-10-00. INSPECTED NR 2 ENGINE AND FOUND TO BE 4 QTS LOW ON ENGINE OIL. CLEANED OIL PRESSURE SWITCH & TRANSMITTER CONNECTORS, INSPECTED FOR OIL LEAKS, AND ADDED FOR QTS OF OIL TO CORRECT LEVEL. NO OTHER DEFECTS NOTED AT THIS TIME. GROUND RAN ENGINE, OK FOR SERVICE AT THIS TIME.