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Mobility and Transport

The Performance Review Body (PRB) is an advisory body to the European Commission. It assists the Commission and national supervisory authorities in the implementation of the performance scheme for air navigation services.

Regular updates on the activities of the PRB are published on the Single Sky website.

PRB Members

The current mandate of the PRB runs from 2019 until 2021. The PRB is made up of nine expert members, including the Chair.

[collapsed title=Regula Dettling Ott – PRB Chair]


Regula Dettling-Ott is an attorney and aviation policy advisor. Since June 2017 she is chairperson of the Performance Review Body (PRB) of the Single European Sky. From 2010 until 2016 she was Vice President EU Affairs for the Lufthansa Group, handling regulatory and industry affairs at EU level for the Lufthansa Group. Prior to working for Lufthansa, Regula Dettling-Ott managed International Relations & Government Affairs at Swiss International Air Lines. Before joining SWISS, she worked as an attorney for many years (partner in a Swiss law firm), specializing in air law including liability matters and accident investigations after major air disasters as well as regulatory matters such as traffic rights and airport regulations. Regula Dettling-Ott is a graduate of the University of Bern (Switzerland) and has done post-graduate studies at Georgetown University (Washington D.C). She holds a doctorate of the University of Bern and is a member of its faculty (Habilitation). She lectures on air law, has published extensively on various subjects in aviation and participated in many global aviation conferences. [/collapsed] [collapsed title=Rosa Maria Arnaldo Valdés]


Rosa María Arnaldo Valdés has more than 20 years of experience in Air Navigation and ATM and has held responsibility positions at the Spanish ANSP in the fields of system design, operational validation, performance evaluation and safety, being appointed Safety Manager in 2005, and President of the Spanish Civil Aircraft Accident Investigation Authority in 2010. In parallel she has developed a career at the Polytechnic University of Madrid, where she is currently teaching Safety Management and Human Factors in Aeronautical Engineering and Aviation Master and PhD programs. [/collapsed] [collapsed title=Magdalena Jaworska]


Magdalena Jaworska holds unique track record in transport policy – ATM and infrastructure building. High level professional experience over more than 10 years in: EU and PL transport policy - Air Traffic Management and transport infrastructure construction (roads); ATM and economic matters, financing of transport infrastructure construction, financial planning of large scale and complex multiannual and multidimensional programs, PPP, EU funds; In 2014 – 2016 CEO (in 2014 CFO) of Polish Air Navigation Services Agency, ANSP. Member of Supervisory Board of SESAR Deployment Manager. [/collapsed] [collapsed title=Andrew Knill]


Andrew Knill served in the Royal Air Force 1973 – 1993 as a Fighter Control Officer, undertaking a range of operational, instructor, training management and staff roles. In 1993 he joined the UK Civil Aviation Authority as Head of Surveillance and Spectrum Management with responsibility for the policy and regulatory aspects related to the CNS infrastructure, including civil/military interoperability. He also represented the CAA on several cross-Government Committees. An ICAO Panel Member and Chair of the European Aeronautical Spectrum Consultation Group, he provided specialist consultancy from 2013 until his appointment to the PRB. [/collapsed] [collapsed title=Estelle Malavolti]


Estelle Malavolti has been professor at Ecole Nationale d'Aviation Civile since 2004, and is a researcher at the Toulouse School of Economics. She holds a PhD in Economics from the University of Toulouse (2002). She has several years of international experience and has received several merit-based grants from the French ministry, Finance and Consumption chair and an individual Marie Curie Research Fellowship. She is specialized in Industrial Organization, applied to air transport markets and competition policy. [/collapsed] [collapsed title=Hans Ollongren]


Hans Ollongren was working over 40 years for SAS - Scandinavian Airlines, until his retirement in 2018. He had numerous positions within the airline, dealing with i.e. pricing, training, network planning and commercial functions. He has been based in Stockholm, Paris and Brussels. He was responsible for the European Affairs office of SAS from 1995-2001. He subsequently held positions as VP Government Affairs and SVP Corporate Communications and Public Affairs, as well as advisor to the President, positions which included responsibility for relations with government administrations, airports and ANSPs. He was member of the STAR Alliance Management Board. [/collapsed] [collapsed title=Ulrich Schulte-Strathaus]


Ulrich Schulte-Strathaus was Secretary General of the Brussels-based Association of European Airlines from 2002-2012. As such he represented the interests of 36 leading European airlines. Before that he had been working in diverse senior management functions at Lufthansa German Airlines for twenty years. He founded his own consultancy in 2012 and advises airlines and airports, as well as EU agencies on aviation-specific issues, ranging from state aid rules, regulatory affairs to change management processes and mentoring of senior executives. [/collapsed] [collapsed title=Ben Van Houtte]


Ben Van Houtte retired from the European Commission in 2018. He worked amongst others in the Competition department, where he was responsible for the air transport liberalization legislation, and in the Transport department, where he headed the “Single European Sky” unit from 2000 through 2007 and initiated the first SES package. Ben studied law and economics in Namur and Leuven (Belgium), obtained a Dr Iur degree in Köln (Germany), an LL.M. degree at Northwestern University (Chicago, USA), and was a Fellow at Harvard University's Weatherhead Center. He worked as an attorney in Chicago and Brussels before joining the Commission in 1984. [/collapsed] [collapsed title=Daniel Weder]


Daniel "Dani" Weder has been in charge as CEO of Skyguide 2007-2017, a private limited company responsible for Swiss air navigation services. Today he works as independent board member and adviser. Before joining Skyguide, he worked for the airlines Swissair and SWISS. He was a.o. in charge as VP Strategic Marketing, VP Product Development, EVP Marketing & Services as well EVP Airport Services & Operations Control. During his long leadership career he managed major crisis and acted as integrator. [/collapsed]

PRB tasks

The tasks of the PRB are outlined in Article 3 of the Commission Implementing Regulation (EU) No 390/2013.

The chair and the members of the Performance Review Body are appointed by the Commission for a fixed term.

The PRB statutory documents are published on the Single Sky website: rules of procedures, data management plan, modalities of cooperation with national supervisory authorities and working arrangements with air navigation service providers, airport operators, airport coordinators and air carriers are also published.

The tasks of the PRB include:

  • the collection, examination, validation and dissemination of relevant data for the performance of air navigation services and network functions;
  • the selection or adaptation of key performance areas;
  • definition of key performance indicators and indicators for monitoring;
  • the setting and revision of Union-wide performance target;
  • the establishment of the baseline values, alert thresholds, and comparator groups established in the performance and charging scheme;
  • the assessment of the consistency of draft national or FAB performance targets with the Union-wide performance targets and the review of draft performance plans, including verification of their completeness;
  • the verification of the draft Network Performance Plan;
  • the assessment of revised performance targets and of the corrective measures taken by the Member States concerned, where appropriate;
  • the monitoring of the performance of air navigation services, including investment and capital expenditure, at Union, national and FAB level;
  • the monitoring of the performance of the network functions;
  • the assessment of the information received from the national supervisory authorities for the purpose of monitoring the performance of the European ATM network;
  • the assessment of the achievement of the performance targets during the reference period;
  • the maintenance and support in the coordination of a stakeholder consultation calendar concerning performance plans and the consultation requirements established in the Regulation.

The PRB may also report and make recommendations to the Commission for improvement of the scheme.

As regards relations with national supervisory authorities (NSA), the PRB

  • obtains the necessary information from NSAs in relation to the performance plans, for the purpose of monitoring of the overall performance of the European ATM network;
  • assists NSAs upon their request by providing an independent view of performance issues, including benchmarking, performance trend analysis, analysis of projections;
  • assists NSAs upon their request in local target setting.

The PRB also supports the competent authorities on their request in assessing the noise situation at airports for which they are responsible, in accordance with Regulation (EU) No 598/2014.

The PRB cooperates with the European Aviation Safety Agency (EASA) in the performance of its tasks when they relate to safety.