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GLOSSARY <br />APPENDIX A <br />AIRPORT <br />: An area of land or water that is used or intended to be used for the landing and takeoff of <br />aircraft, and includes its buildings and facilities, if any. (FAR 1) <br />AIRPORT ELEVATION <br />: The highest point of an airport's usable runways, measured in feet above mean <br />sea level. (AIM) <br />AIRPORT HAZARD <br />: Any structure or natural object located on or in the vicinity of a public airport, or any <br />use of land near such airport, that obstructs the airspace required for the flight of aircraft in landing or <br />taking off at the airport or is otherwise hazardous to aircraft landing, taking off, or taxiing at the airport. <br />(Airport Design) <br />AIRPORT LAND USE COMMISSION (ALUC) <br />: A commission established in accordance with the <br />California State Aeronautics Act in each county having an airport operated for the benefit of the general <br />public. The purpose of each ALUC is “to assist local agencies in ensuring compatibility land uses in the <br />vicinity of all new airports and in the vicinity of existing airports to the extent that the land in the vicinity of <br />those airports is not already devoted to incompatible uses.” An ALUC need not be created if an <br />alternative process, as specified by the statutes, is established to accomplish the same purpose. <br />(California Public Utilities Code, Section 21670 et seq.) <br />AIRPORT LAYOUT PLAN (ALP) <br />: A scale drawing of existing and proposed airport facilities, their <br />location on the airport, and the pertinent clearance and dimensional information required to demonstrate <br />conformance with applicable standards. <br />AIRPORT REFERENCE CODE (ARC): <br /> A coding system used to relate airport design criteria to the <br />operational and physical characteristics of the airplanes intended to operate at the airport. (Airport <br />Design) <br />AIRPORT REFERENCE POINT (ARP) <br />: A point established on an airport, having equal relationship to all <br />existing and proposed landing and takeoff areas, and used to geographically locate the airport and for <br />other planning purposes. (Airport Design) <br />AIRPORT TRAFFIC CONTROL TOWER (ATCT) <br />: A terminal facility that uses air/ground <br />communications, visual signaling, and other devices to provide ATC services to aircraft operating in the <br />vicinity of an airport or on the movement area. (AIM) <br />AIRWAY/FEDERAL AIRWAY <br />: A Class E airspace area established in the form of a corridor, the <br />centerline of which is defined by radio navigational aids. (AIM) <br />ALERT AREA <br />: A special use airspace which may contain a high volume of pilot training activities or an <br />unusual type of aerial activity, neither of which is hazardous to aircraft. (AIM) <br />APPROACH LIGHT SYSTEM (ALS) <br />: An airport lighting system which provides visual guidance to <br />landing aircraft by radiating light beams in a directional pattern by which the pilot aligns the aircraft with <br />the extended runway centerline during a final approach to landing. Among the specific types of systems <br />are: <br />• <br />LDIN <br />Lead-in Light System. <br />• <br />MALSR <br />Medium-intensity Approach Light System with Runway Alignment Indicator Lights. <br />• <br />ODALS <br />Omnidirectional Approach Light System, a combination of LDIN and REILS. <br />• <br />SSALR <br />Simplified Short Approach Light System with Runway Alignment Indicator Lights. (AIM) <br />A-2 <br />Eugene Airport Master Plan Update <br />(February 2010) <br /> <br />