§  17.7   Antenna structures requiring notification to the FAA.

   A notification to the Federal Aviation Administration is required,
   except as set forth in §  17.14, for any of the following construction
   or alteration:

   (a) Any construction or alteration of more than 60.96 meters (200 feet)
   in height above ground level at its site.

   (b) Any construction or alteration of greater height than an imaginary
   surface extending outward and upward at one of the following slopes:

   (1) 100 to 1 for a horizontal distance of 6.10 kilometers (20,000 feet)
   from the nearest point of the nearest runway of each airport specified
   in paragraph (d) of this section with at least one runway more than
   0.98 kilometers (3,200 feet) in actual length, excluding heliports.

   (2) 50 to 1 for a horizontal distance of 3.05 kilometers (10,000 feet)
   from the nearest point of the nearest runway of each airport specified
   in paragraph (d) of this section with its longest runway no more than
   0.98 kilometers (3,200 feet) in actual length, excluding heliports.

   (3) 25 to 1 for a horizontal distance of 1.52 kilometers (5,000 feet)
   from the nearest point of the nearest landing and takeoff area of each
   heliport specified in paragraph (d) of this section.

   (c) When requested by the FAA, any construction or alteration that
   would be in an instrument approach area (defined in the FAA standards
   governing instrument approach procedures) and available information
   indicates it might exceed an obstruction standard of the FAA.

   (d) Any construction or alteration on any of the following airports
   (including heliports):

   (1) An airport that is available for public use and is listed in the
   Airport Directory of the current Airman's Information Manual or in
   either the Alaska or Pacific Airman's Guide and Chart Supplement.

   (2) An airport under construction, that is the subject of a notice or
   proposal on file with the Federal Aviation Administration, and except
   for military airports, it is clearly indicated that the airport will be
   available for public use.

   (3) An airport that is operated by an armed force of the United States.

   Note: Consideration to aeronautical facilities not in existence at the
   time of the filing of the application for radio facilities will be
   given only when proposed airport construction or improvement plans are
   on file with the Federal Aviation Administration as of the filing date
   of the application for such radio facilities.

   [ 39 FR 7581 , Feb. 27, 1974, as amended at  39 FR 26157 , July 17, 1974;
    42 FR 54823 , Oct. 11, 1977;  42 FR 57127 , Nov. 1, 1977]

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