JF,
I think the "loops" argument doesn't apply here. At different altitudes, air density and aerodynamic ceiling come into play. But, we may meet again on this subject on a future thread.
In any event, I appreciate your well reasoned response. Too often lately it seems that the mildest disagreements turn into childish name calling. I don't play that game. I enjoy technical debates with my fellow professionals.
Thank you.
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