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GLOSSARY <br />APPENDIX A <br />STANDARD INSTRUMENT DEPARTURE (SID) <br />: A preplanned instrument flight rules (IFR) air traffic <br />control departure procedure printed for pilot use in graphic and/or textual form. SID's provide transition <br />from the terminal to the appropriate en route structure. (AIM) <br />STANDARD TERMINAL ARRIVAL ROUTE (STAR) <br />: A preplanned instrument flight rule (IFR) air traffic <br />control arrival route published for pilot use in graphic and/or textual form. STARs provide transition from <br />the en route structure to an outer fix or an instrument approach fix/arrival waypoint in the terminal area. <br />(AIM) <br />STOPWAY <br />: An area beyond the takeoff runway, no less wide than the runway and centered upon the <br />extended centerline of the runway, able to support the airplane during an aborted takeoff, without causing <br />structural damage to the airplane, and designated by the airport authorities for use in decelerating the <br />airplane during an aborted takeoff. (FAR 1) <br />STRAIGHT-IN INSTRUMENT APPROACH IFR <br /> —: An instrument approach wherein final approach is <br />begun without first having executed a procedure turn; it is not necessarily completed with a straight-in <br />landing or made to straight-in landing weather minimums. (AIM) <br />TAXILANE <br />: The portion of the aircraft parking area used for access between taxiways, aircraft parking <br />positions, hangars, storage facilities, etc. (Airport Design) <br />TAXIWAY <br />: A defined path, from one part of an airport to another, selected or prepared for the taxiing of <br />aircraft. (Airport Design) <br />TERMINAL INSTRUMENT PROCEDURES (TERPS) <br />: Procedures for instrument approach and <br />departure of aircraft to and from civil and military airports. There are four types of terminal instrument <br />procedures: precision approach, nonprecision approach, circling, and departure. <br />TERMINAL RADAR SERVICE AREA (TRSA) <br />: Airspace surrounding designated airports wherein ATC <br />provides radar vectoring, sequencing, and separation on a full-time basis for all IFR and participating VFR <br />aircraft. (AIM) <br />THRESHOLD <br />: The beginning of that portion of the runway usable for landing. (AIM) <br />TOUCH-AND-GO <br />: An operation by an aircraft that lands and departs on a runway without stopping or <br />exiting the runway. A touch-and-go is defined as two operations. (AIM) <br />TRAFFIC PATTERN <br />: The traffic flow that is prescribed for aircraft landing at, taxiing on, or taking off from <br />an airport. The components of a typical traffic pattern are upwind leg, crosswind leg, downwind leg, base <br />leg, and final approach. (AIM) <br />TRANSIENT AIRCRAFT <br />: Aircraft not based at the airport. <br />TRANSMISSOMETER <br />: An apparatus used to determine visibility by measuring the transmission of light <br />through the atmosphere. (AIM) <br />UNCONTROLLED AIRSPACE <br />: Now known as Class G airspace. Class G airspace is that portion of the <br />airspace that has not been designated as Class A, Class B, Class C, Class D, and Class E airspace. <br />A-9 <br />Eugene Airport Master Plan Update <br />(February 2010) <br /> <br />