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altitude

  1. D

    FAA Airspace question about Surface

    If restricted airspace around an airport starts at the surface. Does that mean that it's the surface field elevation or the surface of the ground no matter what the elevation within that 5miles of the airport. For example: If there is a Class B airspace at an airport with a field elevation...
  2. PRMath

    How High ???

    is there any record of how high an XSP has flown. Do understand, I am only wondering. Are the vertical distances the same as the horizontal distances ?