Sec. 26.309  Station antenna structures.

    (a) Unless the GWCS licensee has received prior approval from the 
FCC, no antenna structure, including radiating elements, tower, supports 
and all appurtenances, may be higher than 61 m (200 feet) above ground 
level at its site.
    (b) Unless the GWCS licensee has received prior approval from the 
FCC, no antenna structure at an airport or heliport 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; or at an airport or heliport under 
construction that is the subject of a notice or proposal on file with 
the FAA, and except for military airports, it is clearly indicated that 
the airport will be available for public use; or at an airport or 
heliport that is operated by the armed forces of the United States; or 
at a place near any of these airports or heliports, may be higher than:
    (1) 1 m above the airport elevation for each 100 m from the airport 
runway longer than 1 km within 6.1 km of the antenna structure.
    (2) 2 m above the airport elevation for each 100 m from the nearest 
runway shorter than 1 km within 3.1 km of the antenna structure.
    (3) 4 m above the airport elevation for each 100 m from the nearest 
landing pad within 1.5 km of the antenna structure.
    (c) A GWCS station antenna structure no higher than 6.1 m (10 feet) 
above ground level at its site or no higher than 6.1 m above any natural 
object or existing manmade structure, other than an antenna structure, 
is exempt from the requirements of paragraphs (a) and (b) of this 
section.
    (d) Further details as to whether an aeronautical study and/or 
obstruction marking and lighting may be required, and specifications for 
obstruction marking and lighting are contained in part 17 of this 
chapter, Construction, Marking and Lighting of Antenna Structures. To 
request approval to place an antenna structure higher than the limits 
specified in paragraphs (a), (b), and (c) of this section, the licensee 
must notify the Federal Aviation Administration (FAA) on FAA Form 7460-1 
and the FCC on FCC Form 854.

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