Glossary Papakupu

Explanations of abbreviations and acronyms.
All 1 A B C D E F G H I J K L M N O P Q R S T U V W Y

    T

    Tachometer indicator
    The engine and rotor RPM indication are presented to the pilot as a percentage on a dual tachometer indicator located on the instrument panel. Under normal operating conditions both the engine and rotor indications are matched in the green arc from 101–104 per cent RPM.
    TAF
    Terminal Aerodrome Forecast
    Tail boom
    The tail boom extends out from the rear of the body of the helicopter.
    Tailcone
    The tailcone, commonly known as the tail boom, is a structural system that extends out of the helicopter’s fuselage. The tail rotor assembly and empennage are attached to the rear of the tailcone.
    Tally
    Record of quantities of goods loaded or discharged
    Tamper
    A machine used to pack (tamp) the track ballast under railway tracks to make the tracks more level.
    Tank Terminal
    Facility for storage and transfer of liquid bulk products
    Tapered monocoque
    A structural system in which the outer skin carries all or a major part of the stresses, in a manner similar to an eggshell.
    TAR
    Track Access Request
    Taxiing
    Taxi means movement of an aircraft on the surface of an aerodrome or on water, excluding take-off and landing, but including, in the case of helicopters, operation over the surface of an aerodrome within a height band associated with ground effect and at speeds associated with air taxiing
    Taxiway
    Path for aircraft moving between runways and aprons
    TBO escalation programme
    A TBO escalation programme is a CAA-acceptable means of compliance, to extend engines beyond the manufacturer’s recommended overhaul limit.
    Technical log
    A running written record of daily flying hours and serviceability state.
    Technical Standard Order
    A minimum performance standard for specified materials, parts and appliances used on civil aircraft.
    TEU
    Twenty-foot equivalent unit - a container size measure
    TG
    Tauranga Airport
    TG
    Tauranga Airport
    The angle of bank
    The angle at which a vehicle is inclined about its longitudinal axis with respect to the plane of its curved path.
    Third Rail
    Conductor rail supplying electric power to trains
    Threshold
    The beginning of an airport runway on which an aircraft can attempt to land.
    Throughput
    Amount of cargo or traffic handled over a period
    Time lapse
    Time-lapse digital images taken five minutes apart
    Time-lapse camera
    A camera system that captures still digital images at regular intervals, rather than as moving video.
    Timetable
    Published schedule of train or flight operations
    Tip-over landing
    A landing where the basket does not remain upright, but tips over onto its side.
    Torsional
    Twisting of the shaft caused by an applied force.
    Torsional damage
    Twisting of the shaft caused by applied force, in this case rotation of the tail rotor drive.
    Touch-and-go
    Touch-and-go is a landing followed immediately by a take-off
    Towage
    Service of assisting a vessel by towing or pushing
    Tower
    Tower provides the air traffic control service for the area on and in the immediate vicinity of the aerodrome.
    Track Circuit
    Electrical circuit used to detect train occupancy of a track section
    Track machines
    Specialised machines capable of travelling on a railway to conduct track maintenance.
    Train control
    The centre from where the movement of all rail vehicles and track access in a specified area are brought under the direction of a Train Controller
    Train controller
    A person qualified to authorise rail movements and track access. Train controllers operate in a train control centre.
    Transit Shed
    Port warehouse for short-term storage of cargo
    Tranzlog
    The train’s ’black box’ data recorder.
    Trawl warp
    A synthetic rope used to haul in trawl fishing nets
    TSR
    Temporary Speed Restriction
    Turnout
    Assembly of rails allowing trains to diverge from a track
    TWACS
    A computer-based system used by train controllers to prepare and issue track warrants safely. It does so by checking against previous prepares, issues and cancellations to ensure that conflicts do not exist.
    TWC
    Track Warrant Control
    Type Certificate
    A Type Certificate is issued by a Regulatory Authority and signifies the airworthiness of a particular category of aircraft, according to its manufacturing design.