Meet the Ascend by Cirium Team

An award winning global team of aviation consultants

Our sophisticated modeling approach underpins our views on aircraft valuations, fleet growth forecast and asset ratings.

Cirium - Ascend - analytics, data for the travel industry

Rob Morris

Global Head of Consultancy

Rob Morris

Global Head of Consultancy

Rob has more than twenty five years industry experience as a commercial aviation analyst. Prior to joining Ascend by Cirium, Rob was responsible for market and strategy analysis in support of a regional aircraft lessor’s business, in the Aerospace team at the UK Government’s Department of Trade and Industry and in a wide range of commercial aircraft and aero-engine programmes.

Cirium - Ascend - analytics, data for the travel industry

George Dimitroff

Head of Valuations, ISTAT Appraiser

George Dimitroff

Head of Valuations, ISTAT Appraiser

George is an ISTAT certified appraiser who oversees all Value and Lease Rate opinions, leads the annual Future Value and Lease Rate forecasting process, has worked with the majority of lessors, banks, manufacturers and a number of airlines, and, previously worked at Airbus and United Airlines.

Cirium - Ascend - analytics, data for the travel industry

Chris Wills

Head of Consultancy Operations, Senior ISTAT Appraiser

Chris Wills

Head of Consultancy Operations, Senior ISTAT Appraiser

Chris facilitates management of the global teams, delivery, valuations, methodology, operating procedures, training and strategic planning. Chris is a Senior ISTAT accredited appraiser and is a head of helicopter & flight simulator valuations, and maintains values on commercial aircraft types.

Cirium - Ascend - analytics, data for the travel industry

Joanna Lu

Head of Consultancy Asia

Joanna Lu

Head of Consultancy Asia

Joanna is a trusted advisor to governments, regulators, investors, OEMs, airlines and airports. She is experienced in providing high quality advisory services and helping clients to find solutions in addressing the most complicated issues. Joanna specializes in Airport planning & design, airline & airport strategic planning, OEM market studies, network development, environmental impact assessment and cargo market analysis. Joanna is familiar with global and Asia aviation market, industry regulations.

Cirium - Ascend - analytics, data for the travel industry

Chris Seymour

Head of Market Analysis

Chris Seymour

Head of Market Analysis

Chris joined Ascend by Cirium in 1985 after taking a Business Studies degree at City University, London. In the early 1990s he joined the expanding consultancy arm of the business, undertaking aircraft valuations and market studies. He was instrumental in developing the helicopter valuation side of the business. As Head of Market Analysis Chris now specialises in the growing advisory and market analysis. He works in the team that produces the Flight Fleet Forecast and has developed the new Global Helicopter Forecast. He is editor of Market Commentaries and is also a speaker and moderator at aviation conferences.

Cirium - Ascend - analytics, data for the travel industry

Peter Morris

Chief Economist

Peter Morris

Chief Economist

Peter serves as Chief Economist at Ascend by Cirium. Mr. Morris is a veteran of over 25 year's in the air transport industry. His expertise spans strategic and economic studies, industry forecasts and a range of traffic, capacity, revenue and cost analyses. Before joining Ascend by Cirium in 2003, he served as Chief Economist for the International Air Transport Association (IATA), where he developed IATA's Aviation Information & Research (AIR) department into a leading global commercial supplier of air transport information and research. He is a regular media commentator on the aviation industry and the impact of new market developments. Mr. Morris holds a BSc in Economics and a MSc in Energy Economics.

Cirium - Ascend - analytics, data for the travel industry

Richard Evans

Senior Analyst

Richard Evans

Senior Analyst

Richard Evans is a Senior Consultant. He applies his expertise working on advisory and valuations projects across the entire commercial aviation sector. Richard joined the consultancy team in 2014 after 27 years with Rolls-Royce, most recently Head of Market Analysis in their Civil Aerospace division. At Rolls-Royce he was responsible for published industry forecasts and provided analysis of major airline and aerospace industry trends. Richard is well known and widely respected for his informed industry views. He is currently chair of the European aerospace analysts group, FEAMA, and is a Fellow of the Royal Aeronautical Society.

Cirium - Ascend - analytics, data for the travel industry

Michael Lapson

Senior Valuations Analyst, Senior ISTAT Appraiser

Michael Lapson

Senior Valuations Analyst, Senior ISTAT Appraiser

Michael is a Senior accredited Appraiser with the International Society for Transport Aircraft Trading (ISTAT) and is based in Cirium's  New York office. Michael has focused on appraisal of commercial fixed-wing aircraft and spare engines since he joined the team in 2010. Prior to joining Ascend by Cirium, Michael was a consultant in the shipping port industry.

Cirium - Ascend - analytics, data for the travel industry

Tony Brooks

Senior Valuations Analyst. ISTAT Appraiser

Tony Brooks

Senior Valuations Analyst. ISTAT Appraiser

Tony has worked in the Ascend by Cirium for over 20 years and is a trusted advisor to banks, lessors, operators and lawyers for whom he covers valuations of all aircraft types. He is one of the few qualified ISTAT (International Society of Transport Aircraft Trading) Appraisers in the world today and is a qualified Expert Witness from the Cardiff University Law School. He specialises in Expert Witness cases, especially those where a Diminution in Value due to damage history is contested.

Cirium - Ascend - analytics, data for the travel industry

Daniel Hall

Senior Valuations Analyst. ISTAT Appraiser, ASA Senior Appraiser

Daniel Hall

Senior Valuations Analyst. ISTAT Appraiser, ASA Senior Appraiser

Daniel is certified as both an Accredited Senior Appraiser (ASA) with the American Society of Appraisers and an Accredited Appraiser with the International Society for Transport Aircraft Trading (ISTAT). Based in Ascend by Cirium's New York office, he has a comprehensive knowledge of the Commercial and Business Aviation sectors. His involvements include analysis of values, market insight & commentary, business development, and consultancy advisory. Daniel frequently works on Commercial & Business Aircraft Market Values and Appraisals, to both an ISTAT and ASA-compliant standard. Daniel specialises in the Business Aviation sector actively tracking Market Values and financing for over 50 Business Jet type families / 100 variants. His client interaction ranges with those representing banks, financiers, investors, airlines, lessors, and includes industry conference speaking.

Cirium - Ascend - analytics, data for the travel industry

David Griffin

Senior Valuations Analyst, ISTAT Appraiser

David Griffin

Senior Valuations Analyst, ISTAT Appraiser

David joined the New York office of Ascend by Cirium in 2017, having previously worked as an Avionics and Systems Engineer at Southern Air and a Commercial Aircraft Appraiser at BK Associates. As a Senior Valuations Analyst, David is focused on appraisal of commercial fixed-wing aircraft and engines. David’s clients primarily include lessors, airlines, hedge funds and investment banks. In addition to being an ISTAT Certified Appraiser, David has a BEng in Aeronautical Engineering and a Masters in Business from the University of Limerick, Ireland.

Thomas Kaplan

Senior Valuations Analyst, ISTAT Appraiser

Thomas Kaplan

Senior Valuations Analyst, ISTAT Appraiser

Thomas focuses on the commercial aviation market, advising clients on asset values and business decisions. He began his career in the aviation industry in 2005 working for a components manufacturer supplying the major players in Montreal’s aerospace industry including Bombardier and Pratt & Whitney Canada. He has since lived in New York, where he studied business and finance, as well as in Dubai, where he worked as a management consultant for A.T. Kearney. Thomas holds a mechanical engineering degree from McGill University and an MBA from Columbia Business School. Thomas is based in Hong Kong.

Cirium - Ascend - analytics, data for the travel industry

Henk Ombelet

Head of Advisory Operations

Henk Ombelet

Head of Advisory Operations

Henk joined the Ascend by Cirium team in March 2012, continuing a career of more than twenty years spent in aviation and aerospace. He started in the engineering department at Fokker Aircraft, before joining the International Air Transport Association. At IATA he was responsible for traffic and financial data collections, edited World Air Transport Statistics, and conducted many studies, forecasts and consultancy projects in the aviation sector. He subsequently joined Cirium as the data manager working closely with key industry partners in traffic data, schedules and fleet data. He was responsible for product development, and set up the route development conference Network Latin America with Airline Business. Henk holds an MSc in Business Administration and Engineering from Twente University of Technology in the Netherlands. He speaks fluent Dutch and Spanish.

Cirium - Ascend - analytics, data for the travel industry

Sara Dhariwal

Valuations Analyst

Sara Dhariwal

Valuations Analyst

Sara joined Ascend by Cirium in 2016, after six years in the EMEA Sales team managing relationships with the majority of EMEA lessors and aircraft traders. Sara is specialising in commercial aircraft and helicopter valuations, but is also responsible for liaising with the market regarding developments and providing thought-leadership input. Sara holds a BAHons in Business from the University of Westminster and a CIRM from the Institute of Risk Management.

Cirium - Ascend - analytics, data for the travel industry

Ryan Hammacott

Risk Analyst

Ryan Hammacott

Risk Analyst

Ryan joined the Ascend by Cirum team in 2016 of spending 3 years with the Cirium Data Solutions & Analytics Team. During this time he developed a wide range of contacts, knowledge and skills particularly within the Aviation Insurance sector, where he helped develop a number of bespoke analytical models. With a background in Aircraft Maintenance and Data Coding, his focus is split between valuations, risk analysis and development of models interrogating data on a large scale. Ryan holds a BSc. (1st Class Hons) from Curtin University in Australia.

Cirium - Ascend - analytics, data for the travel industry

Eva Karagianni

Valuations Analyst

Eva Karagianni

Valuations Analyst

Eva joined the Ascend by Cirium team as an Aviation Analyst. She holds an MSc on Air Transport Management and Planning from the University of Westminster in London and has a wide knowledge of the aviation industry including Airline Economics and Airport Expansion Strategy. She has been part of the Cirium data team prior to joining the consultancy team and she is now responsible for delivering desktop appraisals for different types of aircrafts as well as conducting market research and market commentaries for them.

Cirium - Ascend - analytics, data for the travel industry

Dennis Lau

Aviation Analyst

Dennis Lau

Aviation Analyst

Dennis first joined Ascend by Cirium in August 2004 as Data Analyst in the UK office, focusing on the research of airline operator data. He later joined the marketing team as Research Editor, and was responsible for analysing data for company publications. Dennis also worked on consultancy projects for Asia clients, as well as writing articles for well-known industry publications. Dennis joined the Asia office in February 2012, and has been primarily responsible for researching aircraft fleets data in Greater China and Japan. In addition, he provides data support to key clients and industry knowledge training within the company. Dennis holds a MEng in Aerospace Engineering from Bristol University and an MSc in Aviation Management from the University of Southampton.

Cirium - Ascend - analytics, data for the travel industry

Lionel Olonga

Valuations Analyst

Lionel Olonga

Valuations Analyst

Lionel joined Ascend by Cirium in June 2016 and is currently working towards building a specialisation in fixed wing aircraft and engine assets, as well as supporting Ascend by Cirium's portfolio and lease encumbered valuation capabilities. Prior to joining Cirium, he worked as Portfolio Analyst for Allianz Insurance, where he was involved in pricing and risk modeling of commercial lines business. Lionel holds a Bachelors degree in Air Transport Operations and Management from City University London.

Cirium - Ascend - analytics, data for the travel industry

Valerie Bershova

Valuations Analyst

Valerie Bershova

Valuations Analyst

Valerie is primarily involved with commercial aircraft valuations and market commentaries, whilst working towards a specialism in helicopter valuations. She joined Ascend by Cirium in March 2017, after spending two years in flight planning for commercial and private operators at Stansted airport. Valerie completed the BSc Aviation Technology & Management course at the University of Leeds and was an ISTAT Scholarship recipient in 2014.

Cirium - Ascend - analytics, data for the travel industry

Syed Zaidi

Aviation Analyst

Syed Zaidi

Aviation Analyst

Syed is based in Ascend by Cirium's New York office as an Aviation Analyst. With a core focus on both, commercial and business jet markets, he is responsible for delivering desktop appraisals, market analyses and commentaries for a variety of aircraft and engine types. Before to joining Cirium in 2016, Syed completed his Bachelors and MBA from Embry-Riddle Aeronautical University specializing in Airline Management. He also holds an aviation finance and leasing certification under the ISTAT University programme.

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