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Flashcards in T Deck (55):
1

Tactical air navigation (TACAN)

An electronic navigation
system used by military aircraft, providing both distance and
direction information.

2

Takeoff decision speed (V1)

Per 14 CFR section 23.51:
“the calibrated airspeed on the ground at which, as a result
of engine failure or other reasons, the pilot assumed to have
made a decision to continue or discontinue the takeoff.”

3

Takeoff distance

Per 14 CFR section 23.51:
“the calibrated airspeed on the ground at which, as a result
of engine failure or other reasons, the pilot assumed to have
made a decision to continue or discontinue the takeoff.”

4

Takeoff safety speed (V2)

Per 14 CFR section 23.51:
“the calibrated airspeed on the ground at which, as a result
of engine failure or other reasons, the pilot assumed to have
made a decision to continue or discontinue the takeoff.”

5

Taxiway lights

Omnidirectional lights that outline the edges
of the taxiway and are blue in color.

6

Taxiway turnoff lights

Lights that are flush with the runway
which emit a steady green color.

7

Technique

The manner in which procedures are executed

8

Telephone information briefing service (TIBS)

Telephone recording of area and/or route meteorological
briefings, airspace procedures, and special aviation-oriented
announcements.

9

Temporary flight restriction (TFR)

Restriction to flight
imposed in order to:
1. Protect persons and property in the air or on the
surface from an existing or imminent flight associated
hazard;
2. Provide a safe environment for the operation of
disaster relief aircraft;
3. Prevent an unsafe congestion of sightseeing aircraft
above an incident;
4. Protect the President, Vice President, or other public
figures; and,
5. Provide a safe environment for space agency
operations.
Pilots are expected to check appropriate NOTAMs during
flight planning when conducting flight in an area where a
temporary flight restriction is in effect.

10

Tension

Maintaining an excessively strong grip on the control
column, usually resulting in an overcontrolled situation.

11

Terminal aerodrome forecast (TAF)

A report established
for the 5 statute mile radius around an airport. Utilizes the
same descriptors and abbreviations as the METAR report.

12

Terminal arrival area (TAA)

A procedure to provide a
new transition method for arriving aircraft equipped with
FMS and/or GPS navigational equipment. The TAA contains
a “T” structure that normally provides a NoPT for aircraft
using the approach.

13

Terminal instrument approach procedure (TERP)

Prescribes standardized methods for use in designing
instrument flight procedures

14

Terminal radar service areas (TRSA)

Areas where
participating pilots can receive additional radar services. The
purpose of the service is to provide separation between all
IFR operations and participating VFR aircraft.

15

Terrain awareness and warning system (TAWS)

A
timed-based system that provides information concerning
potential hazards with fixed objects by using GPS positioning
and a database of terrain and obstructions to provide true
predictability of the upcoming terrain and obstacles

16

Thermosphere

The last layer of the atmosphere that
begins above the mesosphere and gradually fades away into
space.

17

Threshold crossing height (TCH)

The theoretical height
above the runway threshold at which the aircraft’s glideslope
antenna would be if the aircraft maintained the trajectory
established by the mean ILS glideslope or MLS glidepath.

18

Thrust

The force which imparts a change in the velocity of a
mass. This force is measured in pounds but has no element of
time or rate. The term “thrust required” is generally associated
with jet engines. A forward force which propels the airplane
through the air.

19

Thrust (aerodynamic force)

The forward aerodynamic
force produced by a propeller, fan, or turbojet engine as it
forces a mass of air to the rear, behind the aircraft.

20

Thrust line

An imaginary line passing through the center of
the propeller hub, perpendicular to the plane of the propeller
rotation.

21

Time and speed table

A table depicted on an instrument
approach procedure chart that identifies the distance from the
FAF to the MAP, and provides the time required to transit
that distance based on various groundspeeds.

22

Timed turn

A turn in which the clock and the turn
coordinator are used to change heading a definite number of
degrees in a given time.

23

Torque

(1) A resistance to turning or twisting. (2) Forces that
produce a twisting or rotating motion. (3) In an airplane, the
tendency of the aircraft to turn (roll) in the opposite direction
of rotation of the engine and propeller. (4) In helicopters with
a single, main rotor system, the tendency of the helicopter to turn in the opposite direction of the main rotor rotation

24

Torquemeter

An instrument used with some of the larger
reciprocating engines and turboprop or turboshaft engines to
measure the reaction between the propeller reduction gears
and the engine case.

25

Total drag

The sum of the parasite drag and induced drag

26

Touchdown zone elevation (TDZE)

The highest elevation
in the first 3,000 feet of the landing surface, TDZE is
indicated on the instrument approach procedure chart when
straight-in landing minimums are authorized.

27

Touchdown zone lights

Two rows of transverse light bars
disposed symmetrically about the runway centerline in the
runway touchdown zone.

28

Tower En Route Control (TEC)

The control of IFR en route
traffic within delegated airspace between two or more adjacent
approach control facilities, designed to expedite traffic and
reduce control and pilot communication requirements.

29

Track

The actual path made over the ground in flight.

30

Tracking

Flying a heading that will maintain the desired track to or from the station regardless of crosswind conditions.

31

Traffic Alert Collision Avoidance System (TCAS)

An airborne system developed by the FAA that operates
independently from the ground-based Air Traffic Control
system. Designed to increase flight deck awareness of
proximate aircraft and to serve as a “last line of defense” for
the prevention of midair collisions.

32

Traffic information service (TIS)

A ground-based service
providing information to the flight deck via data link using
the S-mode transponder and altitude encoder to improve the
safety and efficiency of “see and avoid” flight through an
automatic display that informs the pilot of nearby traffic.

33

Trailing edge

The portion of the airfoil where the airflow over the upper surface rejoins the lower surface airflow.

34

Transcribed Weather Broadcast (TWEB)

A ground-based service
providing information to the flight deck via data link using
the S-mode transponder and altitude encoder to improve the
safety and efficiency of “see and avoid” flight through an
automatic display that informs the pilot of nearby traffic.

35

Transponder

The airborn portion of the ATC radar beacon system.

36

Transponder code

One of 4,096 four-digit discrete codes ATC assigns to distinguish between aircraft.

37

Trend

Immediate indication of the direction of aircraft movement, as shown on instruments.

38

Tricycle gear

Landing gear employing a third wheel located on the nose of the aircraft.

39

Trim

To adjust the aerodynamic forces on the control
surfaces so that the aircraft maintains the set attitude without
any control input.

40

Trim tab

A small auxiliary hinged portion of a movable
control surface that can be adjusted during flight to a position
resulting in a balance of control forces.

41

Tropopause

The boundary layer between the troposphere
and the mesosphere which acts as a lid to confine most
of the water vapor, and the associated weather, to the
troposphere.

42

Troposphere

The layer of the atmosphere extending from
the surface to a height of 20,000 to 60,000 feet, depending
on latitude.

43

True airspeed

Actual airspeed, determined by applying a correction for pressure altitude and temperature to the CAS.

44

True altitude

The vertical distance of the airplane above
sea level—the actual altitude. It is often expressed as feet
above mean sea level (MSL). Airport, terrain, and obstacle
elevations on aeronautical charts are true altitudes.

45

Truss

A fuselage design made up of supporting structural members that resist deformation by applied loads. The truss-type fuselage is constructed of steel or aluminum tubing. Strength and rigidity is achieved by welding the tubing together into a series of triangular shapes, called trusses.

46

T-tall

An aircraft with the horizontal stabilizer mounted on the top of the vertical stabilizer.

47

Turbine discharge pressure

The total pressure at the discharge of the low-pressure turbine in a dual-turbine axial-flow engine.

48

Turbine engine

An aircraft engine which consists of an
air compressor, a combustion section, and a turbine. Thrust
is produced by increasing the velocity of the air flowing
through the engine.

49

Turbocharger

An air compressor driven by exhaust gases,
which increases the pressure of the air going into the engine
through the carburetor or fuel injection system.

50

Turbofan engine

A fanlike turbojet engine designed to
create additional thrust by diverting a secondary airflow
around the combustion chamber.

51

Turbojet engine

A turbine engine which produces its thrust
entirely by accelerating the air through the engine.

52

Turboprop engine

A turbine engine which drives a
propeller through a reduction gearing arrangement. Most of
the energy in the exhaust gases is converted into torque, rather
than using its acceleration to drive the aircraft.

53

Turboshaft engine

A gas turbine engine that delivers power through a shaft to operate something other than a propeller.

54

Turn-and-flip indicator

A flight instrument consisting
of a rate gyro to indicate the rate of yaw and a curved glass
inclinometer to indicate the relationship between gravity and
centrifugal force. The turn-and-slip indicator indicates the
relationship between angle of bank and rate of yaw. Also
called a turn-and-bank indicator.

55

Turn coordinator

A rate gyro that senses both roll and
yaw due to the gimbal being canted. Has largely replaced
the turn-and-slip indicator in modern aircraft.