Hi Lou.

It is interesting to note that you say Open reserve crossfeed ONLY when there is room in tanks 1 & 4, yet the FUEL USAGE PROCEDURE chart, in your first reply, says to open them (if desired) when Tanks 2 & 3 = 1 & 4 + Reserve.

Why do you wait until there is room in Tanks 1 & 4 before opening them? I would just like to understand IF there is some special reason for this. After revising my fuel usage in the 707, I just opened the reserve crossfeed valves as soon as I was using fuel from tanks 1, 2, 3 & 4 + Reserve.

Mark