To Green Dot,
My last post only mentioned Spar Valves as an example of how a problem can exist and fuel flow through the FMU/FMV can appear normal until it causes a flow short fall. I would not expect Spar Valves to be the problem in this case, but they have caused low flow during engine operations, and yes I know EICAS/ECAM will give this info to the crew all things being normal.
My last post was just to point out that a problem/failure mode could have been lurking about long before the 38 reached Heathrow.
I'm still holding out for 1 or 2 reasons for the events on that day.
Reason 1. Leak on a fuel manifold.
Reason 2. CWT scavenged fluid into wings that had very cold fluid in them.
Both the above could start a chain of events that may fit.
The interesting points I remember are.
1. Aircraft had a cold flight to PEK.
2. Aircraft had a cold 3 hour transit in PEK.
3. Aircraft topped up wings with fuel in PEK.
4. Aircraft uplifted neat PEK fuel into CWT.
5. Aircraft had a cold flight to LHR.
6. Aircraft had little or no holding into LHR.
7. Aircraft engines wanted more flow, but was unable to provide.
Be kind to me, I'm tired !!!