What was found
FLIGHT CREW REPORTED THAT DURING LANDING FLARE, AS POWER IS BROUGHT TO IDLE, THE RT ENGINE OIL PRESSURE LIGHT ILLUMINATED AND OIL PRESSURE DROPPED BELOW 25 PSI, GRADUALLY ROSE TO 30 PSI. PERFORMED AN OPS CHECK IAW ENGINE MANUAL AND WAS ABLE TO DUPLICATE THE DISCREPANCY. INSTALLED AN OIL PUMP ASSEMBLY, IAW MM. PERFORMED OPS AND LEAK CHECK OF THE OIL PUMP, NO DEFECTS WERE NOTED. ACFT RETURNED TO SERVICE.