EUROCAE ED SAFETY AND PERFORMANCE REQUIREMENTS STANDARD FOR AIR TRAFFIC DATA LINK SERVICES IN CONTINENTAL AIRSPACE. f) performance requirements specified in Section of the EUROCAE. Document ED incl. change 1 & 2. ATC Communications Management service. EUROCAE ED Safety and Performance Requirements Standard For Initial Air Traffic Data Link Services In Continental Airspace (SPR IC).

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This involves the transition from voice reports based on inertial position to automatic digital reports.

Aircraft are operated using two major methods; positive control and procedural control. This makes a huge difference in airspace capacity. The application is known as ADS-C automatic dependent surveillance, contract.

The final report was released in with a plan released in Positive control is used in areas which have radar and so is commonly referred to as Radar control. So, the improvement not only provides the airplane with a much more accurate position, it also provides an alert to the flight crew should the actual navigation performance exceed the required navigation performance RNP.

The FANS concept was developed to improve the safety and efficiency of airplanes operating under procedural control.

Eurocae ed-120 pdf

Commercial aircraft operators typically get their long haul fleet connected and have dedicated personnel to monitor and maintain the satellite and ground link while business aircraft and military aircraft operators contact companies like AirSatOne to commission the system for the first time, conduct functionality testing and to provide ongoing support. These contracts are set up between ATC and the aircraft’s systems, so that the flight crew has no workload associated with set-up.

If market demand pushes airlines to operate at the same time on a given route, this can lead to airspace congestion, which is handled by delaying departures or separating the airplanes by altitude.

The INS systems have error introduced by drifting after initial alignment. The latter can lead to very inefficient operation due to longer flying times and increased fuel burn. A peer application exists on the ground for the Air Traffic Controller. This is because the air traffic controller can recognize problems and issue corrective directions to multiple airplanes in a timely fashion.


This allows the flight crew to select from a menu of standard ATC communications, send the message, and receive a response. Because the position of the aircraft is updated frequently and VHF voice contact timely, separation standards the distance by which one aircraft must be separated from another are less.


In an effort to improve aviation communication, navigation, surveillance, and air traffic management ICAO standards for a future system were created, this integrated system is known as the Future Air Navigation System FANS and allows controllers to play a more passive monitoring role through the use of increased automation and eurocaee based navigation.

The controller can also set up a deviation contract, which would automatically send a position report if a certain lateral deviation was exceeded. The separation standard is determined by the accuracy of the reported positions, frequency of position reports, and timeliness of communication with respect to intervention.

This allowed other application improvements. It was followed by the first commercial flight from Sydney to Los Angeles on June All other airspace users must be ICAO compliant. The voice quality of the connection is often poor, leading to repeated messages.

Previously, flight crews would be notified of the system being used to calculate the position radios, or inertial systems alone. The controller “sees” the airplanes in the control area and uses VHF voice to provide instructions to the flight crews to ensure separation.

Air traffic control’s ability to monitor aircraft was being rapidly outpaced by the growth of flight as a mode of travel. The deployment of FANS-1 was originally justified by improving route choice and thereby reducing fuel burn. During these trials, airplanes installed applications in their ACARS units which would automatically report positions. The HF radio operator can also be saturated with requests for communication.

This involves a transition from inertial navigation to satellite navigation using the GPS satellites. This involved a transition from voice communications to digital communications. Since this time, other regions have initiated FIT groups. They can select from a set of messages and send communications to the airplane.

The current standard for message delivery is under 60 seconds one way. The purpose of this team is to monitor the performance of the end-to-end system, identify problems, assign problems and assure they are solved.


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Non-FANS procedural separation uses Inertial Navigation Systems for position, flight crew voice reports of position and time of next waypointand High Frequency radio for communication. Because of the deterministic nature of the GPS satellites constellation geometrythe navigation systems can calculate the worst case error based on the number of satellites tuned and the geometry of those satellites. This was based on the early ICAO technical work for automatic dependent surveillance ADS and controller—pilot data link communications CPDLCand implemented as a software package on the flight management computer of the Boeing Boeing also extended the range of aircraft supported eurocar include the Boeing and The communications include air traffic control clearances, pilot requests and position reporting.

Procedural control is used in areas oceanic or land ed–120 do not have radar. This method uses time-based procedures to keep aircraft separated. These trials demonstrated the potential benefits to the airlines and airspace managers. This also introduced the concept of actual navigation performance ANP. Separation standards are what determine the number of airplanes which can occupy a certain volume of airspace.

The Future Air Navigation System FANS is an avionics system which provides direct data link communication between the pilot and the air traffic controller. HF radio communication involves contacting an HF operator who then transcribes the message and sends it to the appropriate ATC service provider.

The members include airframe manufacturers, avionics suppliers, communication service providers, and air eurocwe service providers. These procedures reduce the number of airplanes which can operate in a given airspace. Boeing worked with the airlines to develop a standard which would control the interface between FANS-capable airplanes and air traffic service providers.

The development of the FANS-capable aircraft rd-120 proceeded simultaneously with the ATC ground system improvements necessary to make it work. In this system, an air traffic controller can set up a “contract” software arrangement with the airplane’s navigational system, to automatically send a position report on a specified periodic basis — every 5 minutes, for example.