Illinois Administrative Code › Title 92 - TRANSPORTATION › Part 16 - AIRPORT HAZARD ZONING › Section 16.30 - Definitions

Current through Register Vol. 48, No. 28, July 12, 2024
As used in this Part, the words and terms below shall have the
				meanings given unless the context clearly shows that another interpretation is
				intended:
"Act" means the Airport Zoning Act [620 ILCS 25 ].
"Airport"means any area of land or water, or both, designed and
				set aside for the landing and takeoff of aircraft and utilized or to be
				utilized in the interest of the public for such purposes. An airport is
				"public-owned" if the portion thereof used for the landing and taking-off of
				aircraft is owned, operated, controlled, leased to or leased by the United
				States, any agency or department thereof, this State, or any other state, or
				any municipality or other political subdivision of this State or any other
				state, or any other governmental body, public agency or other public
				corporation. (Section 2 of the Act)
"Airport Elevation" means the established elevation of the
				highest point on the usable landing area of the airport being addressed. The
				airport elevation of each applicable airport expressed in feet above mean sea
				level (MSL) as referenced in the National Geodetic Vertical Datum of 1929
				(NGVD29) or subsequent datum and is identified and described in Section
				16.Appendix A.
"Airport Hazard" means any structure, vegetation, equipment, or
				use of land that obstructs the airspace required for, or is otherwise hazardous
				to, the flight of aircraft in landing, takeoff, or maneuvering at or near the
				airport.
"Airport Layout Plan" or "ALP" means the plan of an airport
				showing the layout of existing and proposed airport facilities.
"Airport Reference Point" or "ARP" means the point established
				as the approximate geographic center of the airport being addressed. This point
				is designated by latitude and longitude coordinates expressed with respect to
				the North American Datum of 1983 (NAD83), unless otherwise noted.
"Alteration" means any construction that would result in a
				change in height of any dimensions of an existing structure.
"Construction" means the erection or alteration of any
				structure either of a permanent or temporary character.
"Departmental Standards" means the Department's rules on
				Aviation Safety, 92 Ill. Adm. Code 14, that apply to airports that are not
				bound by federal grant obligations (see Section 16.Illustration B).
"Division" means the Illinois Department of Transportation,
				Division of Aeronautics.
"FAA" means the United States Department of Transportation,
				Federal Aviation Administration.
"Federally Obligated Airports" means airports that have
				accepted federal funds and are bound by federal grant obligations.
"Final Approach and Takeoff" or "FATO" means a defined
				object-free area over which the final phase of the approach to a hover or a
				landing is completed and from which the takeoff is initiated.
"Growth" means any object of natural growth, including trees,
				shrubs and foliage.
"Height" means the overall height of the top of a structure,
				including any appurtenance installed upon it, for the purpose of determining
				the height limits in all zones set forth in this Part.
"Heliport/Vertiport" means a generic reference to the area of
				land, water, or structure used, or intended to be used, for the landing and
				takeoff of helicopters/VTOL aircraft, together with associated
				buildings.
"Imaginary Surface" means a geometric surface used to describe
				the height limitations set forth in this Part (see Section 16.Illustration
				A).
"Mean Sea Level" or "MSL" means an altitude expressed in feet
				measured from sea level as referenced by the NGVD29 or subsequent datum.
"Non-Conforming Use" means any structure, vegetation, or use of
				land that does not meet the requirements of this Part.
"Non-Precision Instrument Runway" means a runway having an
				existing instrument approach procedure utilizing air navigation facilities with
				only horizontal electronic guidance, or area type navigation equipment, for
				which a straight-in non-precision instrument approach procedure has been
				approved, or planned, and for which no precision approach facilities are
				planned, or indicated on an FAA planning document or military service, military
				airport planning document. ( 14 CFR 77.2, effective October 1,
				2002)
"Permit" means permission granted in writing by the Division to
				construct or alter any structure.
"Person" means any individual, firm, partnership, corporation,
				company, association, joint stock association, or body politic, and including
				any trustee, receiver, sponsor, assignee, or other similar representative
				thereof, and including this State and the Department. (Section 7 of the
				Act)
"Political Subdivision" means any municipality, city,
				incorporated town, village, county, township, district, or authority, or any
				combination of the above, situated in whole or in part within any of the
				surfaces established by this Part.
"Precision Instrument Runway" means a runway having an existing
				instrument approach procedure utilizing both horizontal and vertical guidance
				or a runway for which a precision approach system is planned, or indicated on
				an FAA planning document or military service, military airport planning
				document.
"Runway" means an area of the airport for the landing and
				takeoff of aircraft and consisting of either a specially prepared hard surface
				or turf or an area designated for such use by seaplanes.
"Slope Ratio" means a numerical expression of a stated
				relationship of height to horizontal distance (e.g., 100 to 1 means one hundred
				feet of horizontal distance for each foot of vertical distance).
"Structure" means any form of construction or apparatus of a
				permanent or temporary character, constructed or installed, including any
				implements or material used in the erection, alteration or repair of such
				structure. This includes, but is not limited to, buildings, towers,
				smokestacks, and overhead transmission lines.
"Touchdown and Lift-Off Area" or "TLOF" means an area commonly
				referred to as a helipad and normally centered in an FATO.
"Utility Runway" means a runway that is constructed and
				intended to be used primarily for propeller driven aircraft of 12,500 pounds
				maximum gross weight or less.
"Variance" means a grant of relief by the Division from the
				requirements of this Part in accordance with Section
				16.180.
"Vegetation" means plant life in general.
"Visual Runway" means a runway intended solely for the
				operation of aircraft using visual approach procedures, with no straight-in
				instrument approach procedure and no instrument designation planned or
				indicated on an FAA or Departmental planning document.
"VTOL" means aircraft capable of vertical takeoff and landing
				operations.