Sec. 17.14  Certain antenna structures exempt from notification to the 
          FAA.

    A notification to the Federal Aviation Administration is not 
required for any of the following construction or alteration:
    (a) Any object that would be shielded by existing structures of a 
permanent and substantial character or by natural terrain or topographic 
features of equal or greater height, and would be located in the 
congested area of a city, town, or settlement where it is evident beyond 
all reasonable doubt that the structure so shielded will not adversely 
affect safety in air navigation. Applicant claiming such exemption under 
Sec. 17.14(a) shall submit a statement with their application to the FCC 
explaining basis in detail for their finding.
    (b) Any antenna structure of 6.10 meters (20 feet) or less in height 
except one that would increase the height of another antenna structure.
    (c) Any air navigation facility, airport visual approach or landing 
aid, aircraft arresting device, or meteorological device, of a type 
approved by the Administrator of the Federal Aviation Administration, 
the location and height of which is fixed by its functional purpose.
[ 32 FR 11269 , Aug. 3, 1967, as amended at  39 FR 7581 , Feb. 27, 1974;  42 FR 54824 , Oct. 11, 1977;  61 FR 4363 , Feb. 6, 1996]