Definitions. As used within the Marion Airport Zoning Ordinance, the following definitions shall have the following meanings:
ABOVE GROUND LEVEL (AGL)AGL is the height above the ground or surface an aircraft flies over, or the height of a structure above the ground upon which it is built.
AERONAUTICAL STUDYProcess by which the FAA determines the impact of an object on the safe and efficient use of airspace (see 14 CFR Part 77), or the impact of an airport proposal (see 14 CFR Part 157).
AIRPORTMeans the Marion Airport as described by the "public use" certificate issued by the Iowa Department of Transportation.
AIRPORT HAZARDAny structure or object of natural growth located on or in the vicinity of a public airport, or any use of land near a public airport that obstructs the airspace required for the flight of aircraft landing or talking off at the airport; or is otherwise hazardous to aircraft landing or taking off at the airport. (FAA FAR § 152.3).
AIRPORT HAZARD OVERLAY AREAA mapped area imposing requirements in addition to those of the underlying zoning district. The overlay area is determined by the airport imaginary surfaces as defined by the FAA and extend out and up from the runway surface.
AIRPORT INSPECTIONEach registered public-use airport is subject to inspection by the Iowa Department of Transportation (IDOT) at any reasonable time, but the airport will be inspected no less than every three years. If the inspection by the IDOT reveals an unsafe condition or a failure to meet the minimum safety standards, the IDOT will record that fact and notify the airport in writing with necessary corrective actions. Failure to implement corrective actions may result in airport registration revocation or denial. IAC 761—720.3(328), Public-use airport.
AIRPORT LAYOUT PLAN (ALP)A scaled drawing or set of drawings, in either hard copy or electronic form, of existing and future airport facilities that provides a graphic representation of the existing and long-term development plan for the airport.
APPROACH PROCEDURES WITH VERTICAL GUIDANCE (APV)An instrument approach based on a navigation system that provides course and glidepath deviation information but does not meet the precision approach standards of International Civil Aviation Organization (ICAO) Annex 10. (FAA AC150/5300-13B)
CONSTRUCTION or ALTERATION REQUIRING NOTICE (FAA FORM 7460-1)FAA Form 7460-1 is the Notice of Proposed Construction or Alteration form used to inform the Federal Aviation Administration (FAA) of potential obstructions that could affect navigable airspace, such as structures over 200 feet tall or projects near airports and navigational facilities. This form is submitted through the online Obstruction Evaluation/Airport Airspace Analysis (OE/AAA) system at least 45 days before construction begins, and it triggers an FAA aeronautical study to determine if the proposed structure poses a hazard to air navigation. Its use as specified herein is to document the potential of any construction that potentially exceeds height restrictions as noted.
FEDERAL AVIATION ADMINISTRATION (FAA)A federal agency charged with regulating air commerce to promote its safety and development; encourage and develop civil aviation, air traffic control, air navigation; and promote the development of a national system of airports.
FEDERAL AVIATION REGULATIONSFederal Aviation Regulations (FARs), officially known as the Code of Federal Regulations Title 14 (14 CFR), or its successor, are the rules established by the FAA to govern all aspects of civil aviation in the United States.
HEIGHTHeight is utilized for the purpose of determining the height limits in all zones set forth in this section and shown on the official Marion Airport Height Overlay Zoning Map; height shall be measured as the highest point of a structure, tree, or other object of natural growth, measured from the mean sea level elevation unless otherwise specified.
IMAGINARY SURFACESThose areas established in relation to the airport and each runway consistent with FAR Part 77 in which any object extending above these imaginary surfaces, by definition, is an obstruction. (FAA FAR § 77.25)
INSTRUMENT FLIGHT PROCEDURE (IFP)An instrument flight procedure is a series of predetermined maneuvers for aircraft operating under instrument flight rules, e.g., instrument flight rules (IFR) conditions, when visual flight is not possible due to weather or other visually restrictive conditions. These maneuvers allow for the orderly transition of the aircraft through a particular airspace. The term "instrument flight procedure" refers to instrument approaches, instrument departures, and instrument enroute operations.
IOWA AIRPORT LAND USE GUIDEBOOKA planning resource published by the Iowa Department of Transportation (Iowa DOT), Office of Aviation, that provides best practices, standards, and tools for evaluating land use compatibility around airports. It includes recommended overlay zones, sample planning checklists, model deed restrictions, and relevant references.
MODAL TRANSPORTATION BUREAUIowa law requires that for an airport to be open for use by the public (without permission), it must apply to the Iowa DOT and meet minimum safety standards for runways, approach zones, obstruction-free areas, and general airport facility requirements.
MEAN SEA LEVEL (MSL)The average level of the ocean's surface, used by the Federal Aviation Administration (FAA) as the reference point for measuring how high the land, buildings, or objects are. All heights in this section are measured in feet above mean sea level.
OBJECTIncludes, but is not limited to, aboveground structures, navigational aids, people, equipment, vehicles, natural growth, terrain, and parked aircraft. (FAA AC 150/5300-13)
OBSTRUCTIONAny structure, growth, or other object, including a mobile object, which exceeds a limiting height, specific to its geographic location relative to the runway/airport. (FAA AC 150/5190-4A)
PUBLIC USE AIRPORT"Public use" means available for use by the public without prior approval from the owner or operator. IAC 761—720.2(328) Definitions.
RUNWAYThe Marion Airport supports one hard asphalt-surfaced runway (RW 17/35) that is 3,776 feet in length and 60 feet in width, with a displaced threshold of 244 feet for RW 17.
RUNWAY PROTECTION ZONE (RPZ)An area off the runway end designed to enhance the protection of people and property on the ground. (FAA AC 150/5300-13 B).
UTILITY RUNWAYA runway that is constructed for and intended to be used by propeller driven aircraft of 12,500 pounds maximum gross weight and less. 14 CFR 77.3, "Utility runway."
ZONING OFFICIALFor purposes of this section, the zoning official is the individual hired by the City Manager-City of Marion designated to administer enforce the Marion Airport Zoning Ordinance.