You may choose to upload a file containing turnpoints and (optionally) tasks that will be merged with FAA airport information to produce the output. Four different input formats are supported including SeeYou (.CUP) files, Cambridge (.DAT) files, and Soaring Turnpoint Exchange (.STX) files as published in the World Wide Turnpoint Exchange (WWTX). ILEC .NDB files may also be used as input turnpoint files, however any airspace they contain will be lost or overwritten.
Don't have a turnpoint file? See here for a discussion on where to get one for contest or recreational flying.
Options for controlling the addition of airports in the output files are as follows:
There is also a checkbox that controls renaming. When that box is checked, airport names will appear in the output files just as they are given in the input turnpoint file. If the box is unchecked, official FAA airport names will be used. A similar checkbox controls airport locations. If the box is checked, the locations given in the turnpoint file will be used. If it is unchecked, the official published airport locations will supercede those given in the turnpoint file.
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