Narrative:

During descent through approximately FL200 we received an 'engine oil pressure' EICAS. #2 engine oil quantity appeared to be decreasing rapidly and unusual engine vibration was noted. We executed the appropriate checklist that required an engine shutdown. After completing the initial checklist (engine oil pressure) we declared an emergency with center and were given a vector toward the airfield. We notified the purser and issued a cabin advisory. We then completed the emergency checklist procedures and normal descent and landing checklist procedures. An uneventful approach and landing was flown. We taxied to the gate and performed a normal shutdown in accordance with SOP.

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Original NASA ASRS Text

Title: B777-200 EXPERIENCES LOSS OF OIL AND OIL PRESSURE IN R ENG ON DSCNT. SHUT DOWN AND LAND AFTER DECLARING EMER.

Narrative: DURING DSCNT THROUGH APPROX FL200 WE RECEIVED AN 'ENG OIL PRESSURE' EICAS. #2 ENG OIL QUANTITY APPEARED TO BE DECREASING RAPIDLY AND UNUSUAL ENG VIBRATION WAS NOTED. WE EXECUTED THE APPROPRIATE CHKLIST THAT REQUIRED AN ENG SHUTDOWN. AFTER COMPLETING THE INITIAL CHKLIST (ENG OIL PRESSURE) WE DECLARED AN EMER WITH CTR AND WERE GIVEN A VECTOR TOWARD THE AIRFIELD. WE NOTIFIED THE PURSER AND ISSUED A CABIN ADVISORY. WE THEN COMPLETED THE EMER CHKLIST PROCS AND NORMAL DSCNT AND LNDG CHKLIST PROCS. AN UNEVENTFUL APCH AND LNDG WAS FLOWN. WE TAXIED TO THE GATE AND PERFORMED A NORMAL SHUTDOWN IN ACCORDANCE WITH SOP.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.