At the risk of stating the obvious, we don’t know exactly what caused this do we. What we do know is that there was air, fuel and operationally effective fuel pumps and functioning EEC control, according to the AAIB. Nevertheless, fuel flow was restricted. The question is how. We seem to have exhausted most possibilities. What might be helpful is for someone to run a CFD programme using the same temperature and demand regime experienced by BA 038. Is anyone on here able to do this, or perhaps know someone who might?