"We have been working with the OSYRIS Arrival Manager for over a year now and we couldn't miss it for a single day."

Kristian Pjaaten, Avinor’s AMAN Project Manager

OSYRIS Arrival Manager at Core of Point Merge System to Improve Efficiency of TMA Operations

Oslo Airport is the hub of Norwegian aviation. In 2014, over 24 million passengers traveled through the airport, making it the second busiest airport in the Nordic countries. Approximately 650 flights per day are handled on two parallel runways. Oslo Lufthavn AS owns and operates Norway’s main airport, Oslo Airport, while Avinor, provides air navigation services for civil and military aviation users operating in Norway. When Avinor installed the OSYRIS Arrival Manager in 2010, the main challenge facing Oslo Airport was to ensure sufficient capacity exists to meet growth in operational and passenger demand, especially created by long-haul routes to Non-Schengen destinations. Subsequently Avinor augmented their existing AMAN to further increase capacity and efficiency through an innovative new procedure, the Point Merge System (PMS).


In April 2011, Avinor implemented the world’s first Point Merge System to increase airspace capacity, to improve operational efficiency in the OSLO Terminal Movement Area (TMA). The Point Merge System is an innovative procedural concept developed by the Eurocontrol Experimental Center (ECC) to merge flows of arriving aircraft over a single TMA entry point that takes advantage of an aircraft’s precision area navigation (P-RNAV) capability. This enables efficient sequencing of inbound traffic while supporting continuous descent operations.


Optimized TMA Arrival Sequences Improve Efficiency and Reduce Operational Costs and Emissions: The system monitors the current traffic situation and re-calculates trajectory predictions in case of a mismatch between actual and predicted positions. Based on this input and the spacing requirements, OSYRIS plans the arrival traffic sequence and provides this as an advisory to the controllers. “It changed our way of working dramatically,” said Kristian Pjaaten (Avinor’s AMAN Project Manager), “shifting the responsibility for delay absorption from the terminal to the en-route (ACC) controllers. At the beginning, it was pretty difficult to make that shift. Today, however, we couldn’t miss the system for a single day. OSYRIS AMAN really helps us optimize the arrival sequence. As a result, there are much less Terminal Management Area (TMA) delays. An additional benefit is that the planes no longer have to circle the airport, waiting to land, which helps reduce fuel consumption and carbon dioxide emissions.”


AMAN Planning Improves Efficiency & Controller Productivity: The OSYRIS AMAN system helps increase air traffic flow efficiency in the TMA. Pjaaten: “AMAN allows us to centralize the planning of the arrival traffic and distributes the results to all related sectors and workstations. This means that all controllers get an overview of the global planning, wherever they are, without the need to call their colleagues all the time. In this way, misunderstandings are avoided and our people work more efficiently“


Operational Benefits Delivered by OSYRIS AMAN Supporting Point Merge System: Scandinavian Airlines, SAS, reported fuel savings of up to 133kg on some flights when conducting curved approaches in comparison to basic approach vectors and without AMAN support. Predictions for average savings for all flights range from 50kg up to 80kg per flight, which is significant considering the high traffic volume of Oslo Airport. Estimates on the basis of 150,000 curved approaches using Boeing 737NG variants produces annual fuel savings of 11,250,000kg equating to a 35,437,500kg reduction in carbon emissions (Source: Airspace Journal of CANSO; Issue 29, Quarter 2, 2015, page 31).

Point Merge Systems (PMS)

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Enabling ICAO ASBU

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Maximizing Runway Capacity Utilization

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Oslo Airport is the hub of Norwegian aviation and, the main challenge the airport faced was to ensure sufficient capacity exists to meet growth in operational and passenger demand throughout the years. As a result, in April 2011, Avinor, was the first Air Navigation Service Provider to implement a new and innovative procedure, the Point Merge System (PMS) to increase airspace capacity, to improve safety and to improve environmental performance in the Oslo TMA.


The PMS concept required a change in operational approach procedures augmented by the implementation of new features and functions within the existing OSYRIS AMAN system that Avinor controllers were already using. Harris Orthogon, in partnership with Avinor augmented the installed OSYRIS Arrival Manager with advanced features such as PMS interoperability, turn and speed advices, traffic load prediction and indication and a what-if capability to assess the effect of user intentions. Additionally, Harris Orthogon installed the OSYRIS Arrival Manager both into the simulator and the operational facility, supported training of controllers and technicians and smoothly integrated this advanced functionality into the existing Air Traffic Control System.


Success Factors Enabling a Smooth Project Deployment


Customer Trust & Partnership: Besides the fact, that Harris Orthogon had a working product and met Avinor’s requirements, also visits to existing customers were crucial in the decision making process. “The reference visits were key as we really wanted a proven solution that had been in use for a while and we wanted it asap,” stated Kristian Pjaaten, Avinor’s AMAN Project Manager. During the visits, Avinor was especially impressed by Harris’ OSYRIS Arrival Management (AMAN) System that had been deployed for Skyguide in 2001 and is continuously used to manage air traffic into Zurich Airport’s busy TMA: “The enthusiasm of all the operators there was one reason for us to choose Harris. On top of that, we had good experience using Harris Orthogon solutions already,” Pjaaten added.


Phased Implementation: Given that the PMS concept required a change in operational procedures and the deployment of new features and functions within the existing OSYRIS AMAN system already in use by Avinor, a phased implementation was followed. Initially the OSYRIS AMAN was used as an approach planning and sequence optimization application by Avinor’s approach controllers, but the Point Merge concept required the Area Control Center sector controllers to use the AMAN system and therefore required training. Harris installed the OSYRIS Arrival Manager both into the simulator and the operational facility and smoothly integrated it into the existing Air Traffic Control System. While, Avinor’s air traffic controllers went through 30 hours of training on the simulators before using OSYRIS AMAN in the new operational ATM system, Harris trained the engineering staff on maintaining the system.


OSLO Airport Is Most Efficient Airport in Europe (2011)


Harris Orthogon’s OSYRIS Arrival manager went operational in October 2010 to improve arrival operations at Oslo. In July 2011, the Air Transport Research Society named Oslo Europe’s most efficient airport in the Large Category, and award it received again in 2014.

OSYRIS Arrival Manager (AMAN)

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