What was found
DURING DESCENT WITH THROTTLE AT IDLE, NR 2 ENGINE LOW OIL PRESSURE LIGHT ILLUMINATED WITH AN OIL PRESSURE READING OF 25 PSI. SECURED NR 2 ENGINE. WINDMILLING OIL PRESS 7 PSI, N2-23 PERCENT, N1-14 PERCENT, EGT-70 DEG, AND EPR-1.00. REPLACED MAIN OIL FILTER AND OIL PRESSURE RELIEF VALVE. CHECKED BREATHER PRESSURE IAW PRATT AND WHITNEY MANUAL 72-00 AND JT3D OHM 72-00. OPS AND LEAK CHECKED GOOD.