jroa - Please don't call the local FAA Office about your statement concerning FE maps. It might prove highly embarrassing to you. Of course the rest of us "RE's" live in the real world.
Are you saying that flat maps can not be used for navigation? Last time I checked, they are used everyday.
I meant that the overall Flat Earth map -the North Pole centered Polar Projection of the entire earth - could not be used for navigation.
Of course flat maps are used but they only cover relatively small areas so there is relatively little distortion. Sectional charts are examples. Sectional charts of the United States could be arranged side by side to make a flat earth map of the United States.
The problem with making a flat earth map of the earth lies in the problem of making one without distortion , which all goes back to the fact that the only true representation of the earth is a globe.
The smaller the area of the earth that is covered in a flat map, the less distortion there is. That is why several sectional charts might be used by a pilot in a cross country flight rather than one large map of the entire country.