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IAA provides independent aviation consulting and aircraft sourcing based on the experience gained through years of advising institutional investors concerning manufacturers, airlines and lessors, the commercial and business aircraft market, as well as likely future values/lease rates and trends in the aerospace industry.

Andrew Dewdney has 30 years experience in the aircraft finance and leasing industries, and although most of his career has been in banking, he has worked for Airbus and specialist arranging and broking firms as well. He has risen to Global Head of Aircraft Finance at both Deutsche Bank and HSBC, while active in Singapore, France and the USA as well as the UK. Andrew was responsible for several innovative aircraft financing transactions, and has been involved in the provision of advisory services to purchasers and sellers of aircraft leasing companies, including the sale of Sahaab Leasing while at HSBC. Andrew has an MA in Economics from St John's College, Cambridge.

We are pleased to announce that China Aviation Valuation Advisors has joined us as a Development Partner, and we look forward to working with Dr. David Yu to build on our thought leadership, and improve the intellectual integrity of the forecasts and the Aviation Risk Management System (ARMS) as a whole. We would like to congratulate him on his recent selection as a Fellow of the Royal Aeronautical Society.

Laszlo Karolyi has nearly 30 years of high level experience building secure applications based on Django web servers, using Python, C++, JavaScript, SQL, and many other languages. He has been a critical part of our team since 2016. Our servers are located in Berlin and benefit from the General Data Protection Regulation (GDPR).

William Loh has over 30 years of broad, multi-cycle aviation and risk modelling experience.  He has advised senior management at Deutsche Bank in Frankfurt and London regarding several high-profile investments and transactions. He also qualified as a U.K. Registered Securities Representative, and early in his career, worked in yield management for Lufthansa at their base in Frankfurt, and in corporate planning for one of the first LCCs (Florida Express) in Orlando.

He has pioneered the use of simulation models in this market nearly 20 years ago, and created an innovative aircraft future value/lease rate forecasting model, as well as an operating lease cash flow IRR model which is based on all of the relevant parameters.  If you are investing in aircraft leasing, or need to restructure an existing one, we can help you understand the drivers and maximize your return.

William Loh's knowledge of aviation and aircraft has been enhanced by ASEL and glider ratings, as well as over 200 hours in airliner, fighter and helicopter flight simulators.  He's also been fortunate to have assisted Jim Matthews and the other founders of ISTAT with the creation of their first appraiser certification examinations. He has a Bachelor's of Science degree in Applied Mathematics from the University of Florida.

  • Aircraft Sourcing and Market Advice
  • Valuations of Aircraft, Engines, Simulators
  • Lease IRR Model
  • Risk Analysis Models
  • Future Value/Lease Rate Simulation Model
  • Lease Restructurings
  • Diminution of Value Opinions
  • Loss of Revenue Opinions
  • Credit Risk and Investment Risk Analysis
  • Litigation Consulting
  • Expert Witness Testimony

William Loh, Managing Director

Mobile: (+1 407) 534-7173

Telephone: (+49 (0)6133) 5297

Email: info@intlaviation.com

Andrew Dewdney, Managing Director

Email: andrew@intlaviation.com