What was found
DIVERTED, AFTER SHUTTING DOWN NR 2 ENG. FLT CREW REPORTED LOW OIL PRESSURE IND. REDUCED THROTTLE TO IDLE & PRESSURE STABLIZED MOMENTARLY. OIL PRESSURE BEGAN TO FLUCTUATE ALONG WITH OIL TEMP. PILOT SHUTDOWN ENG BEFORE PRESSURE DROPPED BELOW 5 PSID. MX EXAMINED ENG & FOUND NO IMMEDIATE SIGNS OF LEAKAGE. OIL CHIP DETECTOR & FILTER PULLED AND EXAMINED FOR BEARING MATERIAL. NO MATERIAL FOUND. MX SERVICED ENG WITH 3 QUARTS OF OIL. ENGINES RAN WITH NO FURTHER DEFECTS NOTED. HOWEVER, WHEN PWR PULLED BACK TO IDLE THE OIL PRESS DROPPED AGAIN. 10/12 MAINTENANCE REMOVED AND REPLACED SCAVENGE PUMP. A/C RETURNED TO SERVICE. 10/12/04 MX REPLACED THE SCAVENGE PUMP. OPS CHECK GOOD.