>>> Why could we not just terminate the static lines within the >>> fuselage.
REMEMBER - if your ASI /VSI /Alt does funny things, the static vent may be iced over. Breaking the glass on any one of these will effectively provide venting to the cabin (for all of them). Think about it today, so that if it ever happens, you will already know which one you are prepared to break - no time to think about it when it happens, you will probably have a few other things to worry about. I have however often thought about the same thing - where on the outside surface is their a neutral point that will be "static" for all flight conditions /speeds? On long flights I often fooled around with the alternate static air source on my PA32 trying to see a difference in readings between venting internally or externally. (A simple Glencock that opens the static line to the cabin should the external one ice over). I expected the Altimeter and ASI to show different readings - they did, but minimal - not enough to warrant any attention - even then, which one was correct? Obviously, this will not be the case if the airplane has an aircon or other vent that captures outside air and force feeds the cabin. No combination of fresh air vents and storm window made any meaningful difference to the old Cherokee 6. Almost every species of store bought seem to have the static vent in a different location - I am sure these guys have the means and technology to establish the best location for their respective airplanes - I do not have this knowledge /ability. Maybe a future KRnet posting? Steve J