System = A combination of inter-reiated items arranged to perform a specific function. 

System schematics manual (SSM) = A manuai containing schematic diagrams for aircraft systems ans subsystems that expiains overall system operation. This manual does not replace the Wiring Manuai.

 System efficiency = The ratio of valid replies processed by the interrogator to the total of its own interrogations.

  T = Totai.

 T = Tesia.

 t = Tonne.

 T&E (Transportation and Exportation) An entry filed to control the movement of merchandise being transported through the United States for exportation.

 TA = Technical Assistance.

 TACAN = Tacticai air navigation aid.

 TACM Produres under which air cargo imports move through the gateway city to the city of finai U.S. Cistoms destination for the collection of duty and other import processing, thereby expediting shipment movements, reducing gateway congestion, and saving expense for importers, the Customs Bureau, and the airlines.

 TAF = Terminai aerodrome forecast.

 Take-off phase = The operating phase defined by the time during which the engine is operated at the rated output.

 Take-off surtace = That part of the surface of an aerodrome which the aerodrome authority has deciared avaiiabie for the formai ground orwater run of aircraft taking off in a particoiuiar direction.

 Takeoft Abandoned = A takeoff which has to be discontinued for any reason.

 Takeoff Aborted = A takeoff which has to be discontinued for any reason.

 Tare Weight = The weight of the container before loading of goods being shipped; the actual weight of the container when empty.

 Taritf = The pubiished rates, charges and reiated ruies.

Taritf = A document setting forth appiicabie rules, rates, and charges for the movement of goods. A tariff sets forth a contract of carriage for the shippe~ the consignee, and the carrier. In addition to the domestic tariffs pubiished by Airiines Tariff Publishing Company some airiines aiso pubiish their own tariffs covering speciai services. Internationai tariffs containing freight rates of the U.S. internation carriers are pubiished by the U.S. flag carriers.

 Tanti Rates = Means the tariff concerned with rates and reiated charges.

Tanti Rules Means the tariff concerned with the generai terms and conditions of carriage.

 TAS = True airspeed.

 TAS (True Airspeed) = The speed of the aeropiane relative to undisturbed air.

 Taxi/graund idle = The operating phases invoiving taxi and idie between the initiai starting of the propuision engine(s) and the initiation of the take-off rolI and between the time of runways turn-off and finai shutdown of ali propulsion engine(s).

 Taxi-holding position = A designated position at wich taxiing aircraft and other vehicies may be required to hoid in order to provide adequate ciearance from a runway.

 Taxiing = Movement of an aircraft on the surface of an aerodrome under its own power, exciuding take-off and ianding, but inciuding, in the case of heiicopters, operation over the surface od an aerodrome within a height band associated with ground effect and at speeds associated with taxiing, e. air-taxiing.

 Taxiway = A defined path on a iand aerdrome estabiished for the taxiing of aircraft and intended to provide a iink between one part of the aerodrome and another, inciuding:

a) Aircraft stand taxiiine. A portion of an apron designated as a taxiway and intended to provide access to aircraft stands oniy.

b) Apron taxiway. A portion of a taxiway system iocated on an apron and intended to provide a through taxi route across the apron. c) Rapid exit taxiway. A taxiway connected to a runway at an acute angie and designed to aliow landing aeropianes to turn 0ff at higher speeds than are achieved on other exittaxiways thereby m?nimizing runways occupancy times.

 Taxiway strip = An area inciuding a taxiway intended to protect an aircraft operating on the taxiway and toreduce the risk of damage to an aircraft accidentaiiy running off the taxiway.

 TC = Air Tanzania Corporation.

 TDM = Time-division muitipiex.

TDZ = Touchdown zone.

 TE = Air New Zeaiand Limited.

 TeIecamunication = Any transmission, emission, or reception of signs, signals, writing, images and sounds or inteliigence of any nature by wire, radio, optical or other electromagnetic systems.

 Teletypewriter tape = A tape on which signals are recorder in the

5-unit Star-Sop code by compieteiy severed perforation (Chad

Type) or by partiaily severd perforations (Chadless Type) br

trasmission aver teietypewriter circuits.

 Temperature controlled ground handling = Many of the commodities moving in air freight must be protected against sudden charges in temperatures. The temperature of a jet freighters cabin is ideal to maintain perishables in peak condition; but the increase in the shipment of perishables by air required new strides in groud handiing te protect cargoes from spoilage induced by marked differences in temperatures often encountered on the ground at points of origin and destination. To meet these needs the airlines have, at some cities, speciai equipment and facilities ranging from heated vans to temperature controlled holding rooms in which 100,000 pounds of perishables can be held at one time.

 Temporary importation under hond (TIB) Temporary admission into the United States under a conditional bond far arti?les not imported far sale or far sale on approvai.

 Temporary Visitor = Any person, without distinction as te race, sex, language or religion, who disembarks and enters the territory of a Contracting State otherthan that in wich tha person normaiiy resides; remainstherefornotmorethanthree monthsforiegitimate non-immigrant purposes, such as touring, recreation, sports, health, famiiy reasons, study, reiigious pilgrimages, or business; and does not take up any gainfui occupation during his stay in the territory visited.

 Terminai Cantrol Area = A control area normally estabiished atthe confluence of ATS routes in the vicinity of one or more major aerodromes.

 Tesla (T) = The magnetic fiux density given by a magnetic flux of 1 weber per square metre.

 Test = An examination to determine functional capability or physical integrity of an item.

 Test accelerated = A test in which the appiied stress ievei is chosen te exceed that stated in the reference condictions in order te shorten the time required te observe the stress response of the item, or magnify the response in a given time. To be vaiid, an accelerated test must not alter the basic modes and/or mechanisms of failure or their relative prevalence.

Tesi lunctional = A quantitative check te determino if one or more functions of an item performs within specified limits.

Tesi non-destructive = A test which in no manner affects the function or serviceability of the item undergoing test.

 Tesi aperaiional = A tack te determino if an ibm Is fulfiiiing its intended purpase. The task daes not require quantitative toierances.

 TGC = Travei group charter.

 Third Freedom Fughi = Where cargo is carried by an airiine, from the country in wich it is based, te a foreign country.

 Threshald = The specific value of a usage parameter (fiight cycies, blight hours, ed.) at which the first inspectien of seme particuiar level or methos should be conducted.

 Threshold = The beginning of that portien of the runway usable far ianding.

 Through air waybill = An air waybili covering the entire transportation brom departure te destination of shipment.

 Thraugh Bili al Lading = A singie bili of lading covering both the demestic and internationai carriage of an expert shipment. An air waybiil, far stanco, is essentiaily a threugh bili of alding used far air shipments. Many ocean shipments require twa separate decuments: an iniand bili of lading far domestic carriage and an oceamn bili of iading far internatienai carriage. Threugh bili of iading, cannet be used.

 Through Charge The telai charge from pomI of departure lo point ef destination.

 Thraugh-tiight = A particuiar eperation of aircraft, identibied by the aperator by the uso throughout of the same symboi, from peint al arigin via any intermediate points te pomI of destination.

 Through Rate = The totai rate from peint of departur? te pomI al destination. il may be a jaint rate or a combination al rates.

 Through Route = The telai route from point of departure te point of destination.

 TK = Turk Hava Yoliari AO. (Turkish Airiines).

 T1B = Temporary admission inte the United States under a conditionai bond far articies nel imparted far sale or far sale on approvai.

 TIBA = Traffic information Breadcast by Aircraft.