What was found
AFTER TAKEOFF, AT APPROX 600FT, THE RT ENG OIL PRESSURE INDICATION DROPPED TO 20 PSI FOR APPROX 8-9 SECONDS, THE OIL PRESSURE WARNING ANNUNCIATOR DID NOT ILLUMINATE. THE CREW SHUTDOWN NR 2 ENG AND RETURNED TO FIELD. EMERGENCY WAS NOT DECLARED. REMOVED & INSPECTED RT ENG OIL FILTER, NO DEFECTS NOTED. INSTALLED SERVICEABLE OIL FILTER, EMM 79-20-02, PERFORMED RT ENGINE MAGNETIC CHIP DETECTOR INSPECTION IAW EMM 72-11-00, NO DEFECTS NOTED. R & R RT ENG OIL PSI TRANSDUCER IAW AMM 79-30-00. PERFORMED GROUND RUNS IAW AMM 71-00-00. NO DEFECTS NOTED, CONFIRMED OIL PRESSURE INDICATION FAILURE IAW FAULT ISOLATION CHART.