AN2 - Definitions
Airspace Structure and Air Navigation Services
Airspace Structure and Air Navigation Services
Set of flashcards Details
| Flashcards | 30 |
|---|---|
| Language | English |
| Category | Traffic |
| Level | University |
| Created / Updated | 03.12.2015 / 16.01.2023 |
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Ground Visibility
The visibility at an aerodrome, as reported by an accredited observer.
Location Indicator
A four-letter code group formulated in accordance with the rules prescribed by ICAO and assigned to the location of an aeronautical fixed station.
Aeronautical Fixed Station
A station in aeronautical fixed service.
AFS
Aeronautical Fixed Service
A telecommunication service between specified fixed points provided primarily for the safety of air navigation and for the regular, efficient and economical operation of air traffic.
AFTN
Aeronautical Fixed Communication Network
A world-wide system of aeronautical fixed circuits provided, as part of the aeronautical fixed service, for the exchange of messages and/or digital data between aeronautical fixed stations having the same or compatible communications characteristics.
Prohibited Area
An airspace to defined dimensions, above the land areas or territorial waters of a state, within which the flight of aircraft is prohibited.
Restricted Area
An airspace of defined dimensions, above the land areas or territorial waters of a state, within which the flight of aircraft is restricted in accordance with certain specific conditions.
Danger Area
An airspace of defined dimensions within which activities dangerous to the flight of aircraft may exist at specific times.
Level
A generic term relating to the vertical position of an aircraft in flight and meaning variously height, altitude or flight level.
Height
The vertical distance of a level, a point or an object considered as a point, measured from a specified datum.
Altitude
The vertical distance of a level, a point or an object considered as a point, measured from mean sea level.
Elevation
The vertical distance of a point or a level, on or affixed to the surface of the earth, measured from mean sea level.
Flight Level
A surface of constant atmospheric pressure which is related to a specified pressure datum, 1013,2 hP, and is separated from other such surfaces by specific pressure intervals.
Transition Altitude
The altitude at or below which the vertical position of an aircraft is controlled by reference to altitudes.
Transition Level
The lowest flight level available for use above the transition altitude.
Transition Layer
The airspace between then transision altitude and the transition level.
ATC Clearence
Authorisation for an aircraft to proceed under conditions specified by an air traffic control unit.
Clearance Limit
The point to which an aircraft is granted an air traffic control clearance.
ATC Instructions
Directives issued by air traffic control for the purpose of requiring a pilot to take a specific action.
Holding Fix
A geographical location, identified by visual or other means that serves as a reference for a holding procedure.
Holding Procedure
A predetermined manoeuvre which keeps an aircraft within a specified airspace whilst awaiting further clearance.
Separation
Spacing between aircraft, levels or tracks.
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