Glossary of some Aviation Term
Aerodrome Flight Information Service Operator. A type of air traffic controller who is authorised to give information but not instruction
Fixed to the wing tip, this moving aerofoil is there to allow the areoplane to turn left or right.
An aneroid barometer instrument calibrated to indicate height above a given datum. Can be set to give height above ground, altitude (height above sea level) or a flight level in accordance with the International standard pressure setting.
Height of Aircraft above sea level - this is not the same as height above the ground!
Angle of Attack
Angle between the chord line of an aerofoil and the relative airstream
Aircraft Owners & Pilot's Association
An area of the aerodrome designed to facilitate the safe movements of aircraft on the ground
The master instrument, operated by gyroscope to give the pilot information about aircraft attitude - essential when flying in poor visibility or at night.
Air Traffic Control
Air Traffic Controller
Air Transport Pilot's Licence
C of A
Certificate of Airworthiness (refers to the aircraft not the pilot!)
Civil Aviation Authority
The curvature of the surface of an aerofoil that causes lift
Centre of Gravity
The point in the aircraft through which the sum of the weights of the parts which make up the aircraft may be assumed to pass whatever the attitude of the aircraft. This will become very important when you start making calculations to carry passengers.
Chief Flying Instructor
May be yoke or stick type, operates the ailerons and elevator
Commercial Pilot's Licence
The total resistance of an aeroplane along its line of flight
The movement of an aeroplane in a horizontal plane through the influence of a cross-wind
Flight and flight time recorded when under instruction
Control surface hinged to the trailing edge of the tailplane to provide longitudinal control. Movement of the tail plane causes the aircraft to climb or descend
The point of intersection of two position lines drawn on a map to determine the location of an aeroplane
A hinged surface, usually at the trailing edge of a wing, used to increase the lift of a wing at slow speeds, to steepen the glide and to act as an air brake during the approach and landing
The action of "holding the aircraft off", to reduce the descent rate, during landing
General Flight Test
The shortest line joining two points on the earth's surface
The speed of an aeroplane relative to the earth's surface
The airspeed as shown by an airspeed indicator
International Air Traffic Association
International Commission for Air Navigation
Instrument Flight Rules
Instrument Landing System
Instrument Meteorological Conditions
Wing drag associated with lift
International Standard Atmosphere
An imaginary atmosphere that assumes at mean sea level a temperature of 15° C and a pressure of 1,013·2 millibars, and a fall in temperature of 6·5°C per 1,000m of increased height from sea level up to 11,000m, above which height the temperature is assumed constant at 56·5°C
A line on a weather map drawn through points of equal temperature
Joint Aviation Authority
Joint Aviation Requirements
A local wind produced by the downward motion of cold air off high ground
A nautical unit of speed being equal to one nautical mile (6,080ft) per hour
Airflow free of turbulence
The act of bringing an aeroplane under full control into contact with the ground
The distance between the first point of contact with the ground and the point at which the aeroplane comes to rest
Straight line through the centre of gravity that runs parallel with the line that would run from wing tip to wing tip
The forward edge of a streamline body or aerofoil
The component in a vertical, upward direction in straight and level flight of the resultant force created by the relative wind acting on the lifting surfaces of an aeroplane
Straight line through the centre of gravity that runs parallel with the line that would run from nose to tail
The angle (measured in a clockwise direction) between the course of an aeroplane and Magnetic North
Magnetic Track Angle
The angle (measured in a clockwise direction) between the track of an aeroplane and Magnetic North
Meteorological information (weather reports)
A method of construction in which the skin carries the whole or the greater part of the main loads. Most modern training aircraft are of a monocoque design
Navigator responsible for the navigation of the aircraft
Navigator acting under the supervision of the Pilot in Command
Navigator under training
National Air Traffic Service
Identifying lights on an aircraft can be used to identify the presence of an aircraft and its direction of movement, especially at night. A complete set of navigation lights comprise a red light on the port wingtip, a green light on the starboard wingtip and a white light at the tail
Non Directional Beacon
Navigation Flight Test
Notice to Airmen
National Private Pilot's Licence
Pilot in Command
Pilot in Command Under supervision
Second Pilot exercising the privileges of his licence as a required member of the operating crew
Student Pilot; Pilot under training
The angle by which the nose of an aircraft is inclined up or down from the horizontal
A tube with an open end, exposed to the airstream. This is part of an airspeed indicator.
The left side (looking forward) of the aircraft.
Private Pilot's Licence
Prior Permission Required
Sum of the drag caused by surface friction and pressure
Request magnetic heading to steer towards…..with no wind
Request magnetic bearing from
Setting on the subscale of the altimeter so that the instrument shows height above the reference elevation being used
The indicated reading on an altimeter when the subscale is set to 1013.2
Setting on the subscale of the altimeter so that the instrument shows elevation or altitude above sea level
True great circle bearing to an aircraft from a station
Normally hinged to the fin, this vertical moving surface is for directional management and blance of the aircraft.
Senior Air Traffic Controller
Flight and Flight time recorded when unaccompanied by a supervising pilot
Transmit via Transponder
This is nothing to do with the engine! The wing of an aeroplane is said to stall when the smooth flow over the top surface breaks down and degenerates into turbulence. The amount of lift generated suddenly drops as does the wing. It is essential that pilot's learn how to recover from a spin.
Right-hand side of an aeroplane when looking forward.
Licensed Radiotelephony operator
Radiotelephony operator under training
Usuallyy set in the trailing edge of a control surface, a tab is a small hunged flap that is used to regulate the control surface. This regulation helps ensure the plane is properly trimmed when the controls are centralised.
The horizontal, fixed tail surface of a plane
The movement of aircraft from a position of rest to the moment they are airborne
The speed of an aeroplane through the air in which it is flying
Take of distance available
Take Off Run Available
A course followed across the surface of the earth by the centre of gravity of an aeroplane. This is not always the course set. The track is influenced by wind and pilot error.
Radio Signal Transmitter
This orientation instrument registers the variation of the route of a plane to right or left.
Visual Flight Rules
The distance at which objects may be clearly seen