What was found
AFTER TAKEOFF, THE PILOT REPORTED THE RT ENG WAS VIBRATING, RUNNING ROUGH & LOW ON POWER. AFTER MONITORING THE ENG GAUGE’S THE PILOT OBSERVED THE RT ENG OIL PRESS WAS AT THE BOTTOM OF GREEN ARC & TOP OF YELLOW ARC. THE PILOT DECIDED TO PERFORM A PRECAUTIONARY IN FLIGHT SHUTDOWN OF THE RT ENG, RETURNED & LANDED WITHOUT INCIDENT. TROUBLESHOOTING REVEALED A FAULTY RT ENG RT MAGNETO. REPLACED THE RT ENG, RT MAGNETO. PERFORMED ENG RUN & LEAK CHECKS. ALL CHECKS WERE NORMAL, OBSERVED OIL PRESS ON THE RT ENG WAS NORMAL.