Guys, I have a doubt about the fuel system. One of my doubts already was answered at this post asked by Drew at the link http://www.askacfi.com/27340/gravity-fed-fuel-system.htm but, follow the next one: As we know, generally we have two schematic possibilities in a fuel system such as by gravity either by fuel pump system. However, if the auxiliary fuel pump has the mainly objective to provide added reliability to the fuel system, why we just use this boost pump only at landings and takeoffs as also crossfeed? Why we cannot already let this auxiliary fuel pump “always” on to avoid any problem during flight? And is it normal when activate the auxiliary fuel pump, my fuel flow gauge increase? Thanks in advance.
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