Order 7110.65P, Air Traffic Control, with changes

Pilot/Controller Glossary 2/19/04conditions (IFR or VFR). A tower may also provideapproach control services (radar or nonradar).(See AIRPORT TRAFFIC CONTROL SERVICE.)(See APPROACH CONTROL FACILITY.)(See APPROACH CONTROL SERVICE.)(See MOVEMENT AREA.)(See TOWER EN ROUTE CONTROLSERVICE.)(See ICAO term AERODROME CONTROLTOWER.)(Refer to AIM.)TOWER EN ROUTE CONTROL SERVICE− Thecontrol of IFR en route traffic within delegatedairspace between two or more adjacent approachcontrol facilities. This service is designed to expeditetraffic and reduce control and pilot communicationrequirements.TOWER TO TOWER−(See TOWER EN ROUTE CONTROLSERVICE.)TPX-42− A numeric beacon decoder equipment/system.It is designed to be added to terminal radarsystems for beacon decoding. It provides rapid targetidentification, reinforcement of the primary radartarget, and altitude information from Mode C.(See AUTOMATED RADAR TERMINALSYSTEMS.)(See TRANSPONDER.)TRACEABLE PRESSURE STANDARD− The facilitystation pressure instrument, with certification/calibration traceable to the National Institute ofStandards and Technology. Traceable pressure standardsmay be mercurial barometers, commissionedASOS or dual transducer AWOS, or portable pressurestandards or DASI.TRACK− The actual flight path of an aircraft over thesurface of the earth.(See COURSE.)(See FLIGHT PATH.)(See ROUTE.)(See ICAO term TRACK.)TRACK [ICAO]− The projection on the earth’ssurface of the path of an aircraft, the direction ofwhich path at any point is usually expressed indegrees from North (True, Magnetic, or Grid).TRAFFIC−a. A term used by a controller to transfer radaridentification of an aircraft to another controller forthe purpose of coordinating separation action. Trafficis normally issued:1. In response to a handoff or point out,2. In anticipation of a handoff or point out, or3. In conjunction with a request for control of anaircraft.b. A term used by ATC to refer to one or moreaircraft.TRAFFIC ADVISORIES− Advisories issued to alertpilots to other known or observed air traffic whichmay be in such proximity to the position or intendedroute of flight of their aircraft to warrant theirattention. Such advisories may be based on:a. Visual observation.b. Observation of radar identified and nonidentifiedaircraft targets on an ATC radar display, orc. Verbal reports from pilots or other facilities.Note 1: The word “traffic” followed by additionalinformation, if known, is used to provide suchadvisories; e.g., “Traffic, 2 o’clock, one zero miles,southbound, eight thousand.”Note 2: Traffic advisory service will be provided tothe extent possible depending on higher priorityduties of the controller or other limitations; e.g.,radar limitations, volume of traffic, frequencycongestion, or controller workload. Radar/nonradar traffic advisories do not relieve the pilotof his/her responsibility to see and avoid otheraircraft. Pilots are cautioned that there are manytimes when the controller is not able to give trafficadvisories concerning all traffic in the aircraft’sproximity; in other words, when a pilot requests oris receiving traffic advisories, he/she should notassume that all traffic will be issued.(Refer to AIM.)TRAFFIC ALERT (aircraft call sign), TURN(left/right) IMMEDIATELY, (climb/descend) ANDMAINTAIN (altitude).(See SAFETY ALERT.)TRAFFIC ALERT AND COLLISION AVOID-ANCE SYSTEM− An airborne collision avoidancesystem based on radar beacon signals which operatesindependent of ground-based equipment. TCAS-Igenerates traffic advisories only. TCAS-II generatestraffic advisories, and resolution (collision avoidance)advisories in the vertical plane.PCG T−4