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location of tall structures within local airspace can significantly affect the ability of <br />FAA's Air Traffic Control to route aircraft into and out of an airport and can also <br />reduce an airport's capacity. This guide presents the criteria for evaluating potential <br />obstructions and summarizes the general processes involved in the review and <br />approval of the location of tall structures around airports. <br />The FAA airspace process serves several essential notification and coordination <br />functions, beyond simply ensuring that the approaches to an airport are not obstructed <br />by the construction of objects or the construction of other runways. Each person <br />proposing any type of construction or alteration under the provisions of FAR Part 77 <br />is required to notify the FAA by completing FAA Form 7460 -1, Notice of Proposed <br />Construction of Alteration. The completed form should be sent to the Air Traffic <br />Division of the FAA regional office having jurisdiction over the area where the <br />construction or alterations would be located. <br />Aviation electronic navigation aids (such as radar facilities, and instrument landing <br />systems) are necessary to provide for the safe movement of aircraft. Although many <br />of the navigation systems are located on the airport, some systems (or portions of <br />systems) must be located off airport property. Such electronic systems (whether <br />located on- airport or off) have the potential of being interfered with if non - aviation <br />related electronic sources are placed in proximity or if structures are constructed <br />which could block the navigation aid signals. Where off - airport electronic navigation <br />facilities occur, any development proposed to be located near these facilities needs to <br />be reviewed by the FAA to determine if any interference to the use of the navigation <br />aid would occur. In addition, the placement of lights (high mast lighting and stadium <br />lights, for example) near an airport can be a visual distraction to pilots approaching <br />an airport facility. The process that airports and local governments can follow to <br />ensure that potential impacts related to electronic or visual navigation are avoided is <br />included in this guide. <br />AC 70/7460 -2J, Proposed Construction or Alteration of <br />Objects that May Affect the Navigable Airspace <br />Page III -15 III. Legislation and Federal Regulations Relating to <br />Compatible Land Use Planning <br />73 <br />