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Terms for subject Aviation (1801 entries)

touchdown zone elevation	The highest centreline elevation in the touchdown zone
touchdown zone lighting	Variable-intensity white lighting in the touchdown zone consisting of bars of three inset lights per bar situated on either side of the runway centreline at 1OO-ft intervals, commencing 100 ft from the threshold and extending 3000 ft down the runway. The lights are unidirectional, showing in the direction of approach to landing.
touchdown zone marking	A marking provided in the touchdown zone of a precision approach runway consisting of pairs of rectangular markings symmetrically disposed about the runway centreline
twr	tower
tower	A unit established to provide ATC service to aerodrome traffic
tower control	A control service provided by an airport controller to aircraft and vehicles on active runways and to aircraft in the vicinity of a controlled airport
tower radar area	An area of defined dimensions surrounding a controlled aerodrome within which radar service is provided
tower radar plan	A plan containing the rules and procedures applicable in a tower radar area
trace icing	An atmospheric condition in which ice becomes perceptible, the rate of accumulation being slightly greater than the rate of sublimation. It is not hazardous, even when de-icing or anti-icing equipment is not utilized, unless encountered for periods of more than 1 hr.
track	The projection on the earth’s surface of the path of an aircraft, the direction of which path at any point is usually expressed in degrees from true, magnetic or grid north
traffic advisory	An advisory issued by airborne collision avoidance system (ACAS) alert and collision avoidance system (TCAS) to alert pilots to other air traffic that may be in such proximity to the position or intended route of flight of their aircraft as to warrant their attention
traffic alert and collision avoidance system	A type of airborne collision avoidance system (ACAS) based on a family of airborne equipment that functions independently of the ground-based ATC system to detect potential conflicting aircraft that are equipped with secondary surveillance radar (SSR) transponders. There are three different versions: TCAS I provides traffic advisories; TCAS II provides traffic advisories and vertical resolution advisories (RA) and TCAS IV, when developed, will provide traffic advisories and vertical and horizontal RAs.
traffic circuit	The specified path to be flown by aircraft operating in the vicinity of an aerodrome
traffic information	Information issued by ATS to pilots regarding other known or observed traffic that may be in such proximity to their position or intended route as to warrant their attention
Traffic Information Services-Broadcast	TIS-Broadcast	Michae­lBurov
traffic pattern	The specified path to be flown by aircraft operating in the vicinity of an aerodrome
Tram	Ram Air Temperature	ВосьМо­й
transcribed weather broadcast	A continuous recording of meteorological and aeronautical information that is broadcast on L/MF and VOR facilities for pilots
transfer of control	A transfer of the responsibility for providing ATC service from one ATC unit to another
transferring unit	An ATC unit that is in the process of transferring the responsibility for providing ATC service to an aircraft to the next ATC unit along the route of flight