時(shí)間：2011-04-18 00:52來源：藍(lán)天飛行翻譯 作者：航空 點(diǎn)擊：次
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PCG S.8 T TACAN. (See TACTICAL AIR NAVIGATION.)TACAN-ONLY AIRCRAFT. An aircraft, normally military, possessing TACAN with DME but no VOR navigational system capability. Clearances must specify TACAN or VORTAC fixes and approaches. TACTICAL AIR NAVIGATION. An ultra-high frequency electronic rho-theta air navigation aid which provides suitably equipped aircraft a continuous indication of bearing and distance to the TACAN station. (See VORTAC.)(Refer to AIM.)TAILWIND. Any wind more than 90 degrees to the longitudinal axis of the runway. The magnetic direction of the runway shall be used as the basis for determining the longitudinal axis. TAKEOFF AREA. (See LANDING AREA.)TAKE-OFF DISTANCE AVAILABLE [ICAO]. The length of the take-off run available plus the length of the clearway, if provided. TAKE-OFF RUN AVAILABLE [ICAO]. The length of runway declared available and suitable for the ground run of an aeroplane take-off. TARGET. The indication shown on an analog display resulting from a primary radar return or a radar beacon reply. (See ASSOCIATED.)(See DIGITAL TARGET.)(See DIGITIZED RADAR TARGET.)(See PRIMARY RADAR TARGET.)(See RADAR.)(See SECONDARY RADAR TARGET.)(See TARGET SYMBOL.)(See ICAO term TARGET.)(See UNASSOCIATED.)TARGET [ICAO]. In radar: a.Generally, any discrete object which reflects or retransmits energy back to the radar equipment. b.Specifically, an object of radar search or surveillance. TARGET RESOLUTION. A process to ensure that correlated radar targets do not touch. Target resolution shall be applied as follows: a.Between the edges of two primary targets or the edges of the ASR-9 primary target symbol. b.Between the end of the beacon control slash and the edge of a primary target. c.Between the ends of two beacon control slashes. Note 1: MANDATORY TRAFFIC ADVISORIES AND SAFETY ALERTS SHALL BE ISSUED WHEN THIS PROCEDURE IS USED. Note 2: This procedure shall not be provided utilizing mosaic radar systems. TARGET SYMBOL. A computer-generated indica-tion shown on a radar display resulting from a primary radar return or a radar beacon reply. TAS. (See TERMINAL AUTOMATION SYSTEMS.)TAWS. (See TERRAIN AWARENESS WARNING SYSTEM.)TAXI. The movement of an airplane under its own power on the surface of an airport (14 CFR Section 135.100 [Note]). Also, it describes the surface movement of helicopters equipped with wheels. (See AIR TAXI.)(See HOVER TAXI.)(Refer to 14 CFR Section 135.100.)(Refer to AIM.)TAXI PATTERNS. Patterns established to illustrate the desired flow of ground traffic for the different runways or airport areas available for use. TCAS. (See TRAFFIC ALERT AND COLLISION AVOIDANCE SYSTEM.)TCH. (See THRESHOLD CROSSING HEIGHT.)TCLT. (See TENTATIVE CALCULATED LANDING TIME.)TDLS. (See TERMINAL DATA LINK SYSTEM.)PCG T.1 TDZE. (See TOUCHDOWN ZONE ELEVATION.)TELEPHONE INFORMATION BRIEFING SER-VICE. A continuous telephone recording of meteorological and/or aeronautical information. (Refer to AIM.)TENTATIVE CALCULATED LANDING TIME. A projected time calculated for adapted vertex for each arrival aircraft based upon runway configuration, airport acceptance rate, airport arrival delay period, and other metered arrival aircraft. This time is either the VTA of the aircraft or the TCLT/ACLT of the previous aircraft plus the AAI, whichever is later. This time will be updated in response to an aircraft’s progress and its current relationship to other arrivals. TERMINAL AREA. A general term used to describe airspace in which approach control service or airport traffic control service is provided. TERMINAL AREA FACILITY. A facility provid-ing air traffic control service for arriving and departing IFR, VFR, Special VFR, and on occasion en route aircraft. (See APPROACH CONTROL FACILITY.)(See TOWER.)TERMINAL AUTOMATION SYSTEMS (TAS). TAS is used to identify the numerous automated tracking systems including ARTS IIE, ARTS IIIA, ARTS IIIE, STARS, and MEARTS. TERMINAL DATA LINK SYSTEM (TDLS). A system that provides Digital Automatic Terminal Information Service (D.ATIS) both on a specified radio frequency and also, for subscribers, in a text message via data link to the cockpit or to a gate printer. TDLS also provides Pre.departure Clear-ances (PDC), at selected airports, to subscribers, through a service provider, in text to the cockpit or to a gate printer. In addition, TDLS will emulate the Flight Data Input/Output (FDIO) information within the control tower. TERMINAL RADAR SERVICE AREA. Airspace surrounding designated airports wherein ATC provides radar vectoring, sequencing, and separation on a full-time basis for all IFR and participating VFR aircraft. The AIM contains an explanation of TRSA. TRSAs are depicted on VFR aeronautical charts. Pilot participation is urged but is not mandatory. TERMINAL VFR RADAR SERVICE. A national program instituted to extend the terminal radar services provided instrument flight rules (IFR) aircraft to visual flight rules (VFR) aircraft. The program is divided into four types service referred to as basic radar service, terminal radar service area (TRSA) service, Class B service and Class C service. The type of service provided at a particular location is contained in the Airport/Facility Directory. a.Basic Radar Service. These services are provided for VFR aircraft by all commissioned terminal radar facilities. Basic radar service includes safety alerts, traffic advisories, limited radar vectoring when requested by the pilot, and sequencing at locations where procedures have been established for this purpose and/or when covered by a letter of agreement. The purpose of this service is to adjust the flow of arriving IFR and VFR aircraft into the traffic pattern in a safe and orderly manner and to provide traffic advisories to departing VFR aircraft. |
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