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00751 <br /> ... <br /> — <br /> . ; t.. <br /> r 2 - 1 <br /> 1 <br /> The FAA can evaluate proposed construction in the vicinity of airports <br /> to determine if structures would be a hazard to air navigation. <br /> However, we cannot prevent the construction of any objects. Airpart <br /> environs can only be protected through such means as local ordinances <br /> and acquisition of property rights. ' <br /> . . <br /> Federal AviatiOn Regulations, Part 77, defines certain imaginary <br /> : - - <br /> surfaces around runways which should be maintaincd clear of obstructians. <br /> Of prime importance, the runway approaches should have a 20:1 approach <br /> surface that is clear of all obstructions. The ends of the runway <br /> should be a minimum of 500 feet from nearby roads, so that a minimum .: <br /> clearance of 15 feet may be obtained between the roadway surface ■ <br /> and the 20:1 approach surface to the runway. In addition, the center- <br /> line of the runway should be located at least 250 feet from nearby <br /> roads, so that a minimum clearance of 15 feet may be obtained between <br /> the road surface and a 7:1 transitional surface for the runway. <br /> If the roadway elevation is higher than the runway elevation, these <br /> minimum distances should be increased to provide the 15 foot vertical <br /> clearance above the roadway surface. These clearances should be <br /> increased to 17 feet for interstate highways. <br /> A general ordinance of the State of North Carolina provides that <br /> certain airport construction or alterations require a written peLwit <br /> prior to coeltruction. The permit may be obtained from the North <br /> Carolina Department of Transportation, Division of Aviation. <br /> • ..._ .. <br /> Should you have any questions concerning the above action or desire <br /> technical assistance in airport matters, our advisory service is <br /> available to you. <br /> Sincerely, <br /> original signed <br /> GEORGE L. WARPY4 <br /> George L. Ibrren. <br /> Planning Engineer <br /> cc: <br /> Federal Highway Administration w/encl. (7480-1 & sketch) <br /> Mr. Plentl, State DOT w/encl. e <br /> Bureau of Outdoor Recreation w/encl.'' If II o <br /> GADO, Raleigh w/encl. <br /> FSS, Raleigh w/encl. <br /> ASO-205 . <br /> . AS0-530 , <br /> Ms 330 w/encl. <br /> . . <br /> MT-230 <br /> NC-21:GLWar ren 11c:x7268 2/10/80 <br /> . _.. <br />