Glossary

Question 0

Active runway

Answer 0

Any runway or runways currently being used for takeoff or landing. When multiple runways are used they are all considered active runways. When an aircraft is landing or taking off on an airport surface other than a runway, the direction of flight will determine the active runway.

Question 1

Absolute altitude

Answer 1

Actual height above the earth’s surface

Question 2

Advisory airspace

Answer 2

Class F airspace of defined dimensions within which an activity such as pilot training, soaring, etc. is carried out and of which non – participating pilots should be aware. Non – participating pilots may enter advisory airspace at their own discretion but extra vigilance is essential

Question 3

Advisory service

Answer 3

Advice and information provided by a facility to assist pilots in the safe conduct of flight and aircraft movement

Question 4

Aerodrome

Answer 4

Any area of land or water (including the frozen surface) or other supporting surface used or designed, prepared, equipped or set apart for the arrival and departure, movement or servicing of aircraft. It includes any buildings, installations and equipment in connection therewith.

Question 5

Aerodrome elevation (or field elevation)

Answer 5

Elevation of the highest point of the landing area.

Question 6

Aerodrome traffic

Answer 6

All traffic on the maneuvering area of an aerodrome and all traffic flying in, entering or leaving and aerodrome circuit.

Question 7

Aerodrome traffic frequency (ATF)

Answer 7

A VHF frequency designated for use of radio equipped aircraft operating on the surface or in the vicinity of certain specified uncontrolled airports.

Question 8

Aerodrome traffic zone

Answer 8

Class G airspace of defined dimensions extending upwards from the surface of the earth.

Question 9

Aerodynamic coefficients

Answer 9

Non-dimensional coefficients for aerodynamic forces and moments (ie drag and lift coefficients)

Question 10

Airborne collision avoidance system (ACAS)

Answer 10

An aircraft system based on secondary surveillance radar (SSR) transponder signals which operate independently of ground – based equipment to provide advice to the pilot on potential conflicting aircraft that are equipped with SSR transponders. ACAS equipment designed and manufactured in the US is called traffic alert and collision avoidance system (TCAS).

Question 11

Air carrier

Answer 11

A person who operates a commercial air service.

Question 12

Aircraft

Answer 12

Any machine capable of deriving support in the atmosphere from the reactions of the air.

Question 13

Aircraft engine

Answer 13

An engine used for propelling an aircraft. It includes turbochargers, appurtenances and accessories necessary for functioning, but does not include propellers

Question 14

Air Defense identification zone

Answer 14

Airspace of defined dimensions within which the ready identification, location and control of aircraft is required

Question 15

Airframe

Answer 15

Includes fuselage, booms, nacelles, cowlings, fairings, airfoil surfaces and landing gear of an aircraft and their accessories and controls.