Aviation Terminology #1 ( A to I ) 


  • Apron: The area of an airport where aircraft are parked, unloaded or loaded, refueled, or boarded.

  • Aileron: A primary flight control surface which control movement about the longitudinal axis of an aircraft

  • Attitude Indicater: A flight instrument that informs the pilot of the aircraft orientation relative to Earth's horizon, and gives an immediate indication of the smallest orientation change.

  • Airspeed Indicater: Is a flight instument that displays the speed at which the airplane is moving through the air.

  • Affirmative: A proword meaning `Yes`, `okey` and `wilco`.

  • Air Traffic Control (ATC): A service provided by ground-based air traffic controllers who direct aircraft on the ground and through controlled.

  • Approach facility: A terminal ATC facility that provides approach control service in a terminal area.

  • Altimeter: A flight instrument that indicates altitude by sensing pressure changes.

  • Airport Markings: A sign designed to assist in navigation and the flow of airport traffic.

  • Actuator: A component of a machine that is responsible for moving and controlling a mechanism or system.

  • Approach: Coming towards something.

  • Align: Something is to bring something into place or in line with something else.

  • Ascend: The act of climbing or moving upwards

  • Arrival: The fact of a person or vehicle, etc. getting closer, arriving somewhere.


  • Boom mike: A microphone attached to a pole that one does not have to hold.

  • Break Squelch: A set threshold at which noise becomes audible.

  • Burn-off: Process of using fuel by aircrafts.

  • Block time: The time from the movement an aircraft begins taxiing until it parks after landing.

  • Buffet boundary: : The speed boundaries within which airflow separates from the wing and the buffet is experienced.

  • Base leg: Landing pattern is 90 degrees to the final approach to the runway.


  • Course Deviation indicator: An avionics instrument used in aircraft navigation to determine an aircraft's lateral position in relation to a course to or from a radio navigation beacon.

  • Callsign: Communication call signs assigned as unique identifiers to aircraft.

  • Calibrated Airspeed: Indicated airspeed corrected for instrument and position error.

  • Cruise: To maintain a constant speed.

  • Commuterliners: The smallest narrow-body airliners, carry 20 passenger or less.

  • Ceiling: An overhead interior surface that covers the upper limits of a room.

  • Concours: Aplace where pathways or roads meet, such as in a hotel, a convention center, a railway station, an airport terminal, a hall, or other space.

  • Customs: An authority or agency in a country responsible for collecting tariffs and for controlling the flow of goods, including  animals, transports, personal effects, and hazardous items, into and out of a country.

  • Control tower: A building at an airport from which air traffic is watched and directed

  • Cargo handler: A person employed to handle, move or transfer cargo.

  • Clearence: Authorization for an aircraft to proceed under conditions specified by an air traffic control unit.

  • Collision: An aviation accident in which two or more aircraft come into unplanned contact

  • Climb restriction: : Is strict limitations of airport in order to prevent air traffic accidents.

  • Cross-check: A generic term used by pilots and flight attendants meaning that one person has verified the task of another.

  • Crosswind: Is a wind that blows sideways across an aircraft’s direction of travel.


  • Departure: The fact of a person or vehicle, etc. leaving somewhere.

  • Departure facility: A location that controls air traffic leaving from an airport.

  • Descend: Any portion where an aircraft decreases altitude.

  • Downwind leg: A flight path parallel to the landing runway in the direction opposite the landing direction.

  • Deceleration: The decrease in speed over time.


  • Elevator: A primary flight control surface that controls movement about the lateral axis of an aircraft.

  • Equivalent Airspeed: Calibrated airspeed corrected for the compressibility of air at a non-trivial Mach number.

  • Excessive: Level is something which is more than acceptable.

  • Electrohydraulic Servo Valves: Is control the flow of fluid into the actuators.

  • Emergency descent: A manoeuvre for descending as rapidly as possible to a lower altitude.

  • Extention: Is the range or degree to which a flap can be opened.


  • Fuselage: An aircraft's main body section.

  • Flaps: A high-lift device used to reduce the stalling speed of an aircraft wing at a given weight.

  • Flight service station: An air traffic facility that provides information and services to aircraft pilots before, during, and after flights.

  • Feederliners: Vary in size, but none carry more than 100 passengers.

  • Flight Information Services: A form of air traffic service which is available to any aircraft within a flight information region. 

  • Flight plan: Documents filed by a pilot or flight dispatcher with the local Air Navigation Service Provider.

  • Fly-by-Wire control system: A system that relies on electrical signals. 

  • Fuel flow: Pounds of fuel consumed per hour.

  • Fuel consumption: The amount of fuel an aircraft uses has a huge bearing on its running costs.

  • Final approach leg: Is the last part of the landing pattern, and is a flight path that follows the direction of the runway, along the centerline.



  • Ground Airspeed: The speed of an aircraft relative to the surface of the earth.

  • Ground Controller: The person who controls air traffic on the taxiway and directs flights for take-off and landing.

  • Gust: A sudden, strong increase in the speed of wind.


  • Horizontal Stabilizer: Is a movable surface, typically located at the back of the aircraft, that helps the plane stay level.

  • Headphones: A pair of small speakers worn close to a person`s ears.

  • Handheld mike: A microphone that one holds by hand.

  • Hail: Is a form of solid precipitation

  • Holding Point: A specified location, identified by visual or other means, in the vicinity of which the position of an aircraft in flight is maintained in accordance with air traffic control clearances.

  • Hydromechanical Control System: A high-pressure fluid control system.

  • Hydraulic Circuit: Is a high pressure system using pumps and valves.

  • High-speed Cruise: Type of cruise method which is used for saving fuel during the climb.

  • High-speed descent: Type of descend method that is used for saving fuel and time during the landing.


  • Instrument Panel: A control panel of flight instruments.

  • Identify: To recognize someone or something and say or prove who or what that person or thing is.

  • Indicated Airspeed: The airspeed read directly from the airspeed indicator (ASI) on an aircraft.

  • IFR: One of two sets of regulations governing all aspects of civil aviation aircraft operations.

  • IMC: An aviation flight category that describes weather conditions that require pilots to fly primarily by reference to instruments, and therefore under instrument flight rules (IFR)

  • Inbound: Approaching towards a particular point.

  • Interpret: To decide what the intended meaning of something is.

  • Instrument scan: The process of reading flight position indicators.