To Chris Scott:
By the way, I think you meant "gravity feed" rather than "suction feed"? Wasn't it you and Swedish Steve who proved a long time back in this thread that we are talking about wing tanks?
The OEM AMM officially refers to it as the Engine Fuel Suction Feed.
Swedish Steve,
CONF iture and I had analysed that there was sufficient fuel on board in the main tanks (wing tanks) and that the center tank was empty. Determining approx. volume by the area of frost on the wing lower surface and comparing it with the fuel quantity reading on the flight deck of another B777-200ER. See posts #844 thru #878 for details.
Green-dot