Order 7110.65P, Air Traffic Control, with changes

2/19/04Pilot/Controller GlossaryTHRESHOLD LIGHTS−(See AIRPORT LIGHTING.)TIBS−(See TELEPHONE INFORMATION BRIEFINGSERVICE.)TIME GROUP− Four digits representing the hourand minutes from the Coordinated Universal Time(UTC) clock. FAA uses UTC for all operations. Theterm “ZULU” may be used to denote UTC. The word“local” or the time zone equivalent shall be used todenote local when local time is given during radio andtelephone communications. When written, a timezone designator is used to indicate local time; e.g.“0205M” (Mountain). The local time may be basedon the 24-hour clock system. The day begins at 0000and ends at 2359.TMA−(See TRAFFIC MANAGEMENT ADVISOR.)TMPA−(See TRAFFIC MANAGEMENT PROGRAMALERT.)TMU−(See TRAFFIC MANAGEMENT UNIT.)TODA [ICAO]−(See ICAO Term TAKE-OFF DISTANCEAVAILABLE.)TORA [ICAO]−(See ICAO Term TAKE-OFF RUN AVAILABLE.)TORCHING− The burning of fuel at the end of anexhaust pipe or stack of a reciprocating aircraftengine, the result of an excessive richness in the fuelair mixture.TOTAL ESTIMATED ELAPSED TIME [ICAO]−For IFR flights, the estimated time required fromtake-off to arrive over that designated point, definedby reference to navigation aids, from which it isintended that an instrument approach procedure willbe commenced, or, if no navigation aid is associatedwith the destination aerodrome, to arrive over thedestination aerodrome. For VFR flights, theestimated time required from take-off to arrive overthe destination aerodrome.(See ICAO term ESTIMATED ELAPSED TIME.)TOUCH-AND-GO− An operation by an aircraft thatlands and departs on a runway without stopping orexiting the runway.TOUCH-AND-GO LANDING−(See TOUCH-AND-GO.)TOUCHDOWN−a. The point at which an aircraft first makescontact with the landing surface.b. Concerning a precision radar approach (PAR),it is the point where the glide path intercepts thelanding surface.(See ICAO term TOUCHDOWN.)TOUCHDOWN [ICAO]− The point where thenominal glide path intercepts the runway.Note: Touchdown as defined above is only a datumand is not necessarily the actual point at which theaircraft will touch the runway.TOUCHDOWN RVR−(See VISIBILITY.)TOUCHDOWN ZONE− The first 3,000 feet of therunway beginning at the threshold. The area is usedfor determination of Touchdown Zone Elevation inthe development of straight-in landing minimums forinstrument approaches.(See ICAO term TOUCHDOWN ZONE.)TOUCHDOWN ZONE [ICAO]− The portion of arunway, beyond the threshold, where it is intendedlanding aircraft first contact the runway.TOUCHDOWN ZONE ELEVATION− The highestelevation in the first 3,000 feet of the landing surface.TDZE is indicated on the instrument approachprocedure chart when straight-in landing minimumsare authorized.(See TOUCHDOWN ZONE.)TOUCHDOWN ZONE LIGHTING−(See AIRPORT LIGHTING.)TOWER− A terminal facility that uses air/groundcommunications, visual signaling, and other devicesto provide ATC services to aircraft operating in thevicinity of an airport or on the movement area.Authorizes aircraft to land or takeoff at the airportcontrolled by the tower or to transit the Class Dairspace area regardless of flight plan or weatherPCG T−3