What was found
RT ENG OIL PRESS FLUCTUATED BETWEEN 65-70 THEN DROPPED BELOW 60 PSI WITH LOW OIL PRESS LIGHT ILLUMINATED. INFLIGHT SHUTDOWN. TIGHTENED OIL COOLER RETURN LINE FITTING IAW BE1900 MM 71-00-00, GROUND RAN AIRCRAFT 20 MIN IAW CRUISE CONFIGURATION, ALL ENGINE PARAMETERS NORMAL, NO FURTHER LEAKAGE DETECTED.