Thanks for replies all,
This is what I thought, that ctr tank overrides main tanks when all are selected on. Might simply have had the ctr tank fuel pumps in off position, but this would give low fuel pressure light and master caution too, wouldn't it?
As far as flying goes; I do actually (more or less) sit in front of the computer for the entire flight. I spend the time reading JAA ATP theory anyway, while making dinner and relaxing. Done with systems, pplant, electrics, human factors and met, just started on PoF.
Again thanks all - You guys have an amazing knowledge
