New technologies and procedures such as Performance Based Communication and Surveillance PBCS are implemented in order to reduce the minimum lateral and longitudinal separation, hence increasing capacity in the NAT airspace. Operators that would like to benefit from increased route options and optimum flight level allocation in the NAT Region from 29 March are required to obtain FOCA approval. In order to grant the approval process to be accomplished before 29 March , the operator shall submit form Advancements in aircraft avionics and air traffic management flight data processing systems resulted in an initiative to analyse whether the lateral separation standard in the current North Atlantic High Level Airspace NAT HLA could be reduced from 60 nm to 25 nm thereby increasing the number of route options available and capacity at optimum flight levels. A similar trial has been ongoing in the Shanwick Oceanic Control Area OCA to reduce longitudinal separation between aircraft following the same track to 5 minutes. These trials will be terminated on 29 March

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Most pilots who have flown internationally in the last decade or so are well acquainted with the concept of Required Navigation Performance RNP , the idea that where you can fly will be determined on how accurately you can fly and how well the system alerts you when things are less than promised. The same concept holds true for communications and surveillance.

Does it matter? Yes, the lower the number the tighter the airspace you will be allowed to fly. Put another way: the higher the number, the more airspace around the world that will be denied you.

Everything here is from the references shown below, with a few comments in an alternate color. Surveillance based on performance specifications applied to the provision of air traffic services. The bottom line is you need communications and surveillance to get into tighter and tighter airspace.

As the technology goes up, the RSP goes down. And that will open up some airspace. Always remember that Eddie, when you get right down to it, is just a pilot. He tries to give you the facts from the source materials but maybe he got it wrong, maybe he is out of date. Sure, he warns you when he is giving you his personal techniques, but you should always follow your primary guidance Aircraft manuals, government regulations, etc.

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Required Surveillance Performance Surveillance. Eddie sez:. Last revision: Required Surveillance Performance. For a particular ATM function, an increase or decrease in the required performance for any single element i. It is important that the States harmonize RCP type for the same or similar ATM functions to reduce training requirements and errors resulting from confusion in operations across airspace boundaries.

ICAO Doc , Airspace Planning Methodology, provides considerations for assessing the risk of collision when determining separation minima within an acceptable target level of safety. The risk of collision is a function of navigation performance, route configuration, traffic density, surveillance, communication and air traffic control ATC. Determination of separation minima allows for trade-offs.

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We'd like to understand how you use our websites in order to improve them. Register your interest. The increasing demand for the use of unmanned aerial systems UAS in various social and economic applications has pressed aviation authorities to draw up rules and regulations in order to allow such aircraft to fly in non-segregated airspace. However, issues related to the safety of air traffic operations arise when considering the possibility of both manned and unmanned aircraft coexisting. Thus, surveillance plays a key role in monitoring and controlling air traffic in new scenarios. As positional information is essential to UASs control systems operation, parameters such as accuracy and integrity reflect the correctness and trustworthiness of this information.


Required Surveillance Performance


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