100% correct)
Wind correction angle (WCA) - ANSWER The angle between the desired
track and the heading of the aircraft necessary to keep the aircraft tracking
over the desired track.
Wind direction indicators - ANSWER Indicators that include a wind sock,
wind tee, or tetrahedron. Visual reference will determine wind direction and
runway in use.
Wind shear - ANSWER A sudden change in wind direction and/or speed
over a short distance in the atmosphere.
Winds and temperature aloft forecast (FB) - ANSWER A twice daily
forecast that provides wind and temperature forecasts for specific locations
in the contiguous United States
Wing area - ANSWER The total surface of the wing (in square feet), which
includes control surfaces and may include wing area covered by the
fuselage (main body of the airplane), and engine nacelles.
Adjustable-pitch propeller - ANSWER A propeller with blades whose pitch
can be adjusted on the ground with the engine not running, but which
cannot be adjusted in flight. Also referred to as a ground adjustable
propeller. Sometimes also used to refer to constant-speed propellers that
are adjustable in flight.
Adjustable stabilizer - ANSWER A stabilizer that can be adjusted in flight
to trim the airplane, thereby allowing the airplane to fly hands-off at any
given airspeed.
Advection fog - ANSWER Fog resulting from the movement of warm,
,humid air over a cold surface.
Adverse yaw - ANSWER A condition of flight in which the nose of an
airplane tends to yaw toward the outside of the turn. This is caused by the
higher induced drag on the outside wing, which is also producing more lift.
Induced drag is a by-product of the lift associated with the outside wing.
Aerodynamics - ANSWER The science of the action of air on an object,
and with the motion of air on other gases. Aerodynamics deals with the
production of lift by the aircraft, the relative wind, and the atmosphere.
Aeronautical chart - ANSWER A map used in air navigation containing all
or part of the following: topographic features, hazards and obstructions,
navigation aids, navigation routes, designated airspace, and airports.
Aeronautical decision-making (ADM) - ANSWER A systematic approach
to the mental process used by pilots to consistently determine the best
course of action in response to a given set of circumstances.
Agonic line - ANSWER An irregular imaginary line across the surface of
the Earth along which the magnetic and geographic poles are in alignment,
and along which there is no magnetic variation.
Ailerons - ANSWER Primary flight control surfaces mounted on the trailing
edge of an airplane wing, near the tip. Ailerons control roll about the
longitudinal axis.
Aircraft altitude - ANSWER The actual height above sea level at which the
aircraft is flying.
Aircraft approach category - ANSWER A performance grouping of aircraft
based on a speed of 1.3 times the stall speed in the landing configuration
at maximum gross landing weight.
, Air Data Computer (ADC) - ANSWER An aircraft computer that receives
and processes pitot pressure, static pressure, and temperature to calculate
very precise altitude, indicated airspeed, true airspeed, and air
temperature.
Airfoil - ANSWER Any surface, such as a wing, which provides
aerodynamic force when it interacts with a moving stream of air.
AIRMET - ANSWER Inflight weather advisory issued as an amendment to
the area forecast, concerning weather phenomena of operational interest to
all aircraft and that is potentially hazardous to aircraft with limited capability
due to lack of equipment, instrumentation, or pilot qualifications.
Airport Diagram - ANSWER The section of an instrument approach
procedure chart that shows a detailed diagram of the airport. This diagram
includes surface features and airport configuration information.
Airport markings - ANSWER
Airport signs - ANSWER
Airport Surface Detection Equipment (ASDE) - ANSWER Radar equipment
specifically designed to detect all principal features and traffic on the
surface of an airport, presenting the entire image on the control tower
console; used to augment visual observation by tower personnel of aircraft
and/or vehicular movements on runways and taxiways.
Airport surveillance radar (ASR) - ANSWER Approach control radar used
to detect and display an aircraft's position in the terminal area.
Airport surveillance radar approach - ANSWER An instrument approach in
which ATC issues instructions for pilot compliance based on aircraft
position in relation to the final approach course and the distance from the
end of the runway as displayed on the controller's radar scope.
, Air route surveillance radar (ARSR) - ANSWER Air route traffic control
center (ARTCC) radar used primarily to detect and display an aircraft's
position while en route between terminal areas.
Air Route Traffic Control Center (ARTCC) - ANSWER Provides ATC
service to aircraft operating on IFR flight plans within controlled airspace
and principally during the en route phase of flight.
Airspeed - ANSWER Rate of the aircraft's progress through the air.
Airspeed Indicator - ANSWER A differential pressure gauge that measures
the dynamic pressure of the air through which the aircraft is flying. Displays
the craft's airspeed, typically in knots, to the pilot.
Air traffic control radar beacon system (ATCRBS) - ANSWER Sometimes
called secondary surveillance radar (SSR), which utilizes a transponder in
the aircraft. The ground equipment is an interrogating unit, in which the
beacon antenna is mounted so it rotates with the surveillance antenna. The
interrogating unit transmits a coded pulse sequence that actuates the
aircraft transponder. The transponderANSWERs the coded sequence by
transmitting a preselected coded sequence back to the ground equipment,
providing a strong return signal and positive aircraft identification, as well
as other special data.
Airway - ANSWER An airway is based on a centerline that extends from
one navigation aid or intersection to another navigation aid (or through
several navigation aids or intersections); used to establish a known route
for en route procedures between terminal areas.
Alert Area - ANSWER An area in which there is a high volume of pilot
training or an unusual type of aeronautical activity.