 | Air Navigation Service Provider ( ANSP ) |
| An Air Navigation Service Provider (ANSP) is a body that manages flight traffic on behalf of a company, region or country. |
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| Apron |
| The apron is the part of the aerodrome set aside for loading, unloading or maintaining aircraft. |
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| Advisory circular (AC) |
| A circular issued by civil aviation authorities that contains information pertinent to flight safety, i.e. equipment malfunctions, factors affecting security, navigation performance and airspace. |
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| Aeronautical broadcasting service |
| A broadcasting service intended for the transmission of information relating to air navigation.
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| Aeronautical chart display, electronic |
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An electronic device by which flight crews are enabled to execute, in a convenient and timely manner, route planning, route monitoring and navigation by displaying required information. |
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| Aeronautical fixed service (AFS) |
| 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 services.
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| Aeronautical fixed station |
| A station in the aeronautical fixed service.
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| Aeronautical ground light |
| Any light specially provided as an aid to air navigation, other than a light displayed on an aircraft. |
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| Aeronautical mobile service (AMS) |
| A mobile service between aeronautical stations and aircraft stations, or between aircraft stations, in which survival craft stations, or between aircraft stations, in which survival craft stations may participate; emergency position-indicating radio beacon stations may also participate in this service on designated distress and emergency frequencies. |
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| Aeronautical operational Control (AOC) |
| Communication required for the exercise of authority over the initiation, continuation, diversion or termination of flight for safety. |
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| Aeronautical passenger communication |
| Communication relating to the non-safety voice and data services to passengers and crew members for personal communication. |
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| Air Navigation multinational facility or service |
| A facility or service established for the purpose of servicing international air navigation in airspace serviced by a single state. It could be operated by one state, a group of states or an international operating agency. |
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| Air operator certificate (AOC) |
| A certificate authorizing an operator to carry out specified commercial air transport operations. |
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| Air traffic control (ATC) |
| An integrated system consisting of air traffic control facilities and equipment, communication services, landing and navigation aids, air traffic control standards, rules and regulations, whose objective is to prevent aircraft collisions and expedite and maintain an orderly flow of traffic. |
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| Air traffic management (ATM) |
| The aggregation of the airborne functions and ground-based functions(air traffic services, airspace management and air traffic flow management) required to ensure the safe and efficient movement of aircraft during all phases of operations. |
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| ASK |
| Available seat kilometers, which is the total number of seats available on scheduled flights multiplied by the number of kilometers these seats were flown. ASK will generally be used as the denominator when calculating ‘unit cost’. |
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| Aircraft Utilisation |
| The amount of time that an aircraft spends in the air carrying passengers. |
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| Aircraft push back |
| The act of pushing an aircraft back from a gate or away from other aircraft at parking areas, to allow for an aircraft to begin taxiing under its own power. |
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| Aircraft wet lease |
| The lease of an aircraft with flight and cabin crew, fuel, supplies, supporting services and all other operating necessities. |
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| AMPT |
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| AMPP |
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| AROC |
| Aircraft related operating costs |
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