A few points of interest.
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1. CWT tanks are switched off at say 900KG to avoid a TWA 747 event.
2. Different fuel source to engines during T/O and Landing to avoid a single event causing problems to more than one engine.
3. I thought CWT 900KG is removed via the motive force of wing boost pumps.
4. Fuel temp in CWT can change very quick when not much fuel in the tank and the air con packs operating.
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One question still not answered, after the first engine lack of thrust, did any of the cross feed valves open before the other engine suffered from a lack of thrust, can anybody answer this question- please-
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After reading the last few posts, does anybody have the 777 MEL item about wing boost pumps inop, should have some good info on fuel figs required and pitch angles, seem to remember on the 747 landing with lots of extra fuel due to inop pumps and making sure fuel pipes never get uncovered. the 747 MEL on this item was often misunderstood and aircraft landed with less than required fuel in tank/tanks. sorry for the drift......
Last edited by Joetom; 22nd February 2008 at 20:37.