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#11
June 2nd 04, 05:45 PM
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Paul Bart wrote:
I do not know about the conversion process required to convert geometric and I assume the actual within the bounds of GPS error altitude, to pressure altitude. However given the assertion that the pressure altitude can differ by as much as 1000ft from the geometric altitude, does it imply that two pressure altitudes can actually differ by 2000ft? Would it not provide sufficient argument to switch to geometric altitude? Yes, this is correct. You don't have to climb as high on a cold winter day, as you would on a hot summer day, to obtain a specific pressure altitude gain. But, I suspect some (maybe most?) would say that we have always measured pressure altitude is this sport, and that we should continue doing so... Marc 
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