take-off weight /te.k .f we.t/
noun the weight of an aircraft at take-off, made up of its empty weight, plus the weight of its passengers, freight and fuel
talk down /t.lk daυn/ verb to give advice to a pilot by radio on how to land an aircraft
tan abbreviation tangent tangent /tnd.nt/ noun a straight line, curve or surface which meets another curve or curved surface at a point, but which, if extended, does not cut through at that point . The glide path is at a tangent to the runway.
Abbreviation tan tangential /tnden.(.)l/ adjective
positioned at a tangent to something
else tank /t.k/ noun a large container for storing fluid . An aluminium alloy fuel tank is housed in each wing.
taper /te.p./ verb to reduce in thick-ness towards one end . Fuel flowing from the float chamber passes through a jet, in which is positioned a tapered needle valve.
tapered wing /te.p.d w../ noun a
wing which becomes narrower in width
from root to tip target /tɑ.t/ noun the indication shown on a radar screen resulting from a primary radar return or a radar beacon reply . In a secondary radar system, the target is active.
tarmac /tɑmk/ noun the runway and taxiways of an airport . They were
working fast to clear the snow from the tarmac.
TAS abbreviation true airspeed task /tɑsk/ noun a function or duty .
Present day transport aircraft are required to fly accurately, in all weather, for long distances or long peri-ods of time and, in order to carry out this task efficiently, an autopilot is used.
taxi /tksi/ verb to move an aircraft along the ground under its own power before take-off or after landing . Light aircraft can be steered while taxiing via a direct link from rudder pedals to the nosewheel. (NOTE: taxies – taxiing – taxied; the US English is taxying.)
taxiing /tksi../ noun the movement of an aircraft along the ground under its own power before take-off or after land-ing . the landing and taxiing of an air-craft . The taxiing of tail-wheel aircraft is more difficult than nosewheel air-craft. (NOTE: The US spelling is also taxying.)
taxiway /tksiwe./ noun a tarmac surface connecting the ramp or apron with the runway . an airfield, i.e. an area given over to runways, taxiways and aprons
TCA abbreviation terminal control area
TCAS abbreviation traffic alert and collision avoidance system TCDS abbreviation type certificate