B747-200 OVERWATER FLT CONTINUATION TO NRT AFTER INFLT SHUTDOWN OF #3 ENG.

Narrative

SUSPECTED BIRD STRIKE #3 ENG. JUST AFTER TKOF FROM BBB; ENG #3 HAD NOTICEABLE VIBRATION WITH OIL QUANTITY FLUCTUATION. AFTER 2 HRS OIL LOSS AT RATE OF 1.2 GALLONS PER HR WAS EVIDENT. WHEN OIL QUANTITY DROPPED TO ZERO; ENG #3 WAS PRECAUTIONARY SHUT DOWN; AT AC48Z. CONTINUED TO ZZZ OR XYZ DUE TO WX CONDITIONS AT CCC. CCC RPTING STRONG GUSTY XWINDS. A PLANNED RESTART WAS PLANNED AND WE GOT APPROVAL FOR CONTINUATION TO ZZZ; JAPAN. EMER WAS DECLARED TO EANCE ARTCC AND WAS CANCELED AFTER ENG WAS RESTARTED IN DSCNT FOR ARR TO ZZZ. DISPATCH AND MAINT CTL WERE NOT A GREAT HELP AS INFO WAS LATE AND SOMETIMES WRONG. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT THE VIBRATION WAS NOTED AFTER TKOF FROM BBB. THE VIBRATION WAS NOT TOO NOTICEABLE WHEN THE ENG WAS SET AT 87% N2. AFTER HIS BUNK PERIOD OF 2.5 HRS; RPTR NOTED OIL QUANTITY DROPPING. COMPANY WAS CONTACTED AND A FORECAST OF ZERO OIL QUANTITY IN 3 HRS WAS PASSED ON TO ACR DISPATCH. CCC; THE DIVERSION ARPT; WAS EXPERIENCING WINDS FROM THE N AT 35 KTS GUSTING TO 60 KTS. DECISION MADE FOR ZZZ. NEW FLT PLAN REQUESTED. FLT PLAN DELAYED IN XMISSION UNTIL IT WAS 1 HR OLD WHEN RECEIVED. ACR MAINT DEPT ASKED THEM TO SWAP OIL QUANTITY GAUGES; WHICH THEY DID. WAS NOT A GAUGE PROB. WHEN ENG OIL SHOWED ZERO; THE ENG WAS IDLED. ABOUT 1.5 HRS LATER; THE PRESSURE FLUCTUATED AND ENG SHUT DOWN. PIC DECLARED EMER. NO ALT CHANGES NECESSARY. EMER CANCELED WITH XYZ CTL WHEN #3 ENG RESTARTED AT ACR MAINT REQUEST. THEY DID NOT WANT ANY INCIDENTS ON APCHING ZZZ ARPT. REQUEST WAS FOR 'COSMETIC' AND POLITICAL REASONS. APCH MADE WITH #2 AND #3 ENGS AT IDLE; USING #1 AND #4 ENG.