The Logansport/Cass County Airport Overlay District shall consist of the inner sections of airport approach areas and aircraft circling areas as defined below and identified by the Airport Master Plan prepared by the Board of Aviation Commissioners of the City of Logansport. All uses and structures shall also comply with the Indiana Tall Structure Safety Act (I.C. 8-21-10, as amended) and all other applicable state and federal regulations. All structures and uses in underlying districts within the airport approach area and airport circling area shall comply with the following:
(A) Inner section of airport approach areas. The airport approach area comprises those areas below the flight path of aircraft approaching or taking off from the runways of the airport.
(1) For any designated instrument runway the inner section of the approach area is as follows: The area, trapezoidal in shape, begins at a line drawn perpendicular to the end of the runway. Its width at this end is 1,000 feet bisected by the extended centerline of the runway. It extends away from the runway for a distance of 10,000 feet bisected by the extended centerline of the runway. Its width increases symmetrically to a width of 4,000 feet at the outer edge.
(2) For any designated non-instrument runway the inner section of the approach area is as follows: The area begins at a line drawn perpendicular to the end of the runway. Its width at this end is 500 feet bisected by the extended centerline to the runway. It extends away from the runway for a distance of 5,000 feet measured horizontally along the extended runway centerline. Its width increases symmetrically to a width of 1,250 feet at the outer edge.
(3) No structure (any object constructed or installed by man, including, but not limited to buildings, towers, smokestacks, earth formation and overhead transmission lines) or any object of natural growth (trees and the like) shall be erected, allowed to grow or allowed to exist in the inner section of an airport approach area.
(B) Aircraft circling area. The aircraft circling area is the area of any airport which lies generally below the flight path of aircraft circling such airport.
(1) Inasmuch as the use of properties close to an airport may incorporate operations or equipment that would interfere with the safe visual or instrument landing and taking off of aircraft, this chapter prohibits the use of lights which may cause glare, the emission or creation of smoke and particulate matter, and the construction of any structure which interferes with communication associated with air navigation.
(2) The height of all buildings and structures hereafter designed or erected and existing buildings which may be reconstructed, altered, moved or enlarged shall not exceed the horizontal and conical surfaces of the airport such as defined below:
(a) Horizontal surface. An oval shaped surface 150 feet above the airport. The surface is determined by scribing an arc with a radius equal to twice the length of the longest runway and measured from the centerline at the end of each runway and interconnecting these arcs with tangents.
(b) Conical surface. An oval donut shaped surface commencing at the periphery of the horizontal surface and sloping upward and outward 20 feet horizontally for each foot vertically and for a horizontal distance of 7,000 feet and extending to a height of 500 feet above the airport elevation.
(c) Approach areas. The horizontal and conical surface do not include the approach areas.
(C) Logansport/Cass County Airport Authority Board Review.
(1) An applicant seeking rezoning, use variance or a special use permit involving any use, building or structure regulated by the underlying zone or the Airport Overlay Zone shall be reviewed in accordance with the applicable procedure in this section. During this review process, the Logansport/Cass County Airport Authority Board shall be notified of the proposal and any public hearing and be given an opportunity to comment and be notified of the decision.
(2) Except as specifically provided in this section, no material change shall be made in the use of land, no structure shall be erected or otherwise established, no tree shall be planted and no variances to extend the height of a structure granted in any zone created by this article unless a review thereof has been applied for and granted by the Logansport/Cass County Airport Authority Board. Each application requiring the airport authority review shall indicate the purpose for which review is desired, with sufficient particularity to provide for a determination whether the resulting use, structure or tree would conform to the purpose of this section. If such determination is in the affirmative, the Zoning Administrator may proceed with the improvement location permit process. An improvement location permit may not be issued prior to review by the Airport Authority.
(3) In the area lying within the limits of the horizontal surface and conical surface, Airport Authority Board review is not required for any tree. In areas lying within the limits of the approach zones but at a horizontal distance of not less than 4,200 feet from each end of the runway, Airport Authority Board review is not required for any tree.
(4) Airport Authority Board review is not required for internal alterations or for residential uses meeting the conditions for the airport overlay district.
(5) Nothing herein shall require any change in any lawfully constructed building, structure or use in existence at the time of adoption or amendment of this section for its current lawful use.
(1993 Code, § 8-35) (Ord. 93-02, passed 2-1-1993; Am. Ord. 2008-09, passed 10-20-2008; Am. Ord. 2009-05, passed 7-6-2009)
