aviation resource group international

About US


Aviation Resource Group International (ARGI) has pioneered aviation consulting since the mid-1970s. We have established ourselves as trusted advisors to leading aviation businesses for decades.


We aim to accelerate the safe, equitable, and environmentally responsible integration of Advanced Air Mobility (AAM) solutions by fostering collaboration with industry leaders while leveraging data and technology to optimize sustainability.


We see ourselves as a catalyst for innovation and progress in the Aviation and Advanced Air Mobility (AAM) sectors, and we are leading the transformation to a more sustainable and technologically advanced future.

The Keys to Our Success

ARGI’s success is built upon a foundation of 5 decades of proprietary market data, deep industry knowledge, and a client-focused approach that ensures successful transactions.

The keys to our success are:

  1. Unparalleled Expertise
  2. Deep Industry Knowledge
  3. Client-Centric Approach


A Team Of Professionals

Our unwavering commitment to excellence has seen us guide clients through over 300 successful transactions with a total market value greater than $2 billion.

ARGI has been part of aviation’s incredible evolution, from the jet age to the dawn of the future with the introduction of UAVs and eVTOLs. Decades of experience allow us to navigate today’s rapidly changing aviation landscape skillfully while helping our clients better prepare for the future.

Steve Dennis

Founding Partner

W. Stephen (Steve) Dennis founded ARGI in 1975, and he implemented the first business valuation system in the industry. With 50 years of experience in the private and executive aviation industry, he specializes in valuation, sales, acquisitions, mergers, and strategic planning. Steve has occupied key leadership positions in the USA and Europe. Noteworthy projects include reorganizing Harrods Aviation, London; consulting for TAG Aviation at Farnborough Airport; and planning, designing, and developing Eccelsa Aviation for His Highness the Aga Khan, Costa Smeralda, Sardinia.

Thomas M. Hirschman

Founding Partner in Memorandum

Thomas Hirschmann was Born September 27, 1954, and left us too soon, at 64, passing on April 3, 2019. During his storied career, Mr. Hirschmann worked his way up the corporate ladder from apprenticing as an airframe, engine mechanic, and electronic engineer to Chairman and CEO of the Jet Aviation Group.
Mr. Hirschmann’s extensive experience, analytical capabilities, solid knowledge of all aspects of the aviation business, and gregarious personality made him one of the most respected and beloved individuals in the industry. His presence continues to be missed.

Michael Dennis

Managing Partner

Michael Dennis has 20+ years of experience developing FBO projects globally and holds an MBA from Embry Riddle. He has a proven track record of leading complex ventures in emerging markets and thriving in new environments. He specializes in integrating best practices and technology solutions to ensure the success of aviation businesses.

Leveraging his global expertise, Michael streamlines and implements customized solutions that empower clients worldwide. Since founding Magi Aviation in 2013, he has excelled at crafting practical and impactful solutions and optimizing processes through digital transformation.

Istvan Megyeri

Chief Technology Officer (CTO)

Istvan’s expertise in data science and business management allows him to easily translate complex data into actionable insights. He has a proven track record of success in senior-level management positions. His diverse skill set, including computer programming and software development, makes him an indispensable asset to any company or project.

Istvan currently holds a PhD in Data Science, an MBA in Finance and Business, and a Master’s Degree in Information Technology,

our focus

Sustainability at ARGI


Part of this repeats in Section 5. Sustainability

ARGI’s Sustainability and Innovation | A Focused Approach

ARGI, the world’s leading Aviation Advisory and Consulting firm since 1975, recognizes the critical need for a sustainable future. We are committed to achieving net zero for the aviation sector well before the 2050 target.

Leading the Charge Towards a Net Zero Future

This commitment extends beyond simply meeting industry standards; it reflects our core values and dedication to ensuring a healthy planet for future generations.

Our Strategy for Sustainable Aviation

ARGI’s sustainability strategy focuses on accelerating the development and implementation of innovative solutions that will transform the aviation industry:

      • Electrification of Aviation
      • Operational Efficiency

ARGI’s Role in Achieving Net Zero

ARGI is uniquely positioned to play a leading role in guiding companies towards the goal of achieving net zero.

Our extensive industry experience and network of global partners allow us to:

      • Advise Airports and Stakeholders
      • Develop Industry Standards
      • Promote Collaboration and Innovation

The future of aviation demands a commitment to environmental responsibility.