What was found
DURING FLIGHT, #2 OIL QUANTITY FELL TO 0, NO OTHER ABNORMAL INDICATIONS WERE NOTED AT THE TIME. ABOUT 2 HRS LATER, OIL PRESS BEGAN TO DECREASE, #2 ENG SHUTDOWN DUE TO "ENG 2 OIL PRESS" EICAS MSG WHEN THROTTLES WENT TO IDLE AT DESCENT. OIL PRESS DROPPED TO NEAR REDLINE FOR LAST 3 HRS OF FLIGHT. PRESS AT SHUTDOWN ABOUT 63 PSI. TEMP ABOUT 112 DEGREES C. TEMP HAD REMAINED STABLE FOR ENTIRE FLIGHT.(<P >INSPECTED ENGINE AND FOUND LOOSE B-NUT ON OIL FILTER HOUSING, TORQUED NUT IAW AMM 20-51-01 NO OTHER LEAKS NOTED, RAN ENGINE AT HIGH POWER, PERFORMED PART RUN 84% N2 FOR 20 MINUTES ALL PARAMETERS NORMAL, FINAL LEAK CHECK SATISFACTORY IAW AMM 71-00-00.</P>)