Conklin & de Decker focuses on fixed- and rotary-wing aircraft operating cost, performance and specification databases, maintenance management software, financial management, fleet planning, market research, aviation tax issues, and financial, tax and management seminars.

A Brief History

  • The two friends and business associates begin working together to develop the predecessor to Aircraft Cost Evaluator (ACE).

    1971

    Al Conklin & Bill de Decker
  • Al and Martha Conklin found Al Conklin & Associates to create relative aircraft comparisons for the industry worldwide.

    1984

    Al Conklin & Associates
  • The industry standard for relative cost and benchmarking is launched.

    1984

    Aircraft Cost Evaluator
  • Bill de Decker comes onboard as a partner.

    1989

    Bill de Decker Joins Al Conklin & Associates
  • The must-have performance and specification comparison tool arrives.

    1991

    Aircraft Performance Comparator
  • The innovative and comprehensive aircraft budget and financial analysis tool is launched.

    1992

    Life Cycle Cost
  • The company becomes Conklin & de Decker Associates.

    1993

    Conklin & de Decker Associates
  • Conklin & de Decker begins offering a growing range of educational seminars.

    1993

    Educational Seminars
  • The industry-leading maintenance tracking software is launched.

    1997

    MxManager
  • Al Conklin and Bill de Decker publish a textbook covering the acquisition process for business aviation.

    1998

    Aircraft Acquisition Planning Book
  • The state tax resource packed full of critical general aviation tax information is released.

    2000

    State Tax Guide
  • Conklin & de Decker is acquired by JSSI. The two companies harness decades of aircraft operating data and expertise to deliver a suite of exciting new product and service enhancements to clients.

    2018

    Conklin & de Decker. A JSSI Company
  • Conklin & de Decker introduces the next generation of aircraft ownership and operating support at NBAA-BACE 2018.

    2018

    A New Conklin & de Decker

Leadership Team

Francisco Zozaya

President of Conklin & de DeckerINFO

Francisco Zozaya

As President of Conklin & de Decker, Mr. Zozaya provides leadership to Conklin & de Decker. Previously, Mr. Zozaya served as Pre-Owned Director at Aerolineas Ejecutivas, managing its pre-owned aircraft sales and acquisitions business unit. He facilitated several key industry alliances and memberships for Latin America’s largest business aviation company and has established an extensive network with the global broker community, financial institutions, OEMs and MROs. Mr. Zozaya graduated from Universidad Iberoamericana in Mexico City as an industrial engineer.

Bill de Decker

Co-Founder INFO

Bill de Decker

Mr. de Decker's experience includes sales engineering, market research, and aerodynamic design. His responsibilities range from consulting studies to developing new programs and seminars for the company. Areas of expertise include financial management, business and fleet planning, certification issues, life cycle cost and operations. From 1976 to 1989, Mr. de Decker managed the Falcon and Bell Learning Centers, as well as the Communications Systems Division for FlightSafety International. Prior to 1976, he worked for Dassault Falcon Jet and Boeing. He has a Master of Science in Engineering/Economics and a Bachelor of Science in Aerospace Engineering. Mr. de Decker is located in the Texas office.

Brandon Battles

Vice President INFO

Brandon Battles

Mr. Battles has been with Conklin & de Decker since 1995. His primary responsibilities include oversight of the company’s various products and their development, analysis of business processes, and research of operating cost and performance data. He is also involved with consulting and several of the company’s seminars. Areas covered by his consulting work include fleet evaluations, acquisition planning, review of business processes in maintenance organizations, and analysis of maintenance costs. Mr. Battle's background is in accounting and, prior to joining Conklin & de Decker, he worked for Bell Helicopter Textron, Inc., as Manager of Direct Operating Cost Programs.

David Wyndham

Vice President INFO

David Wyndham

Mr. Wyndham joined Conklin & de Decker in 1993. His primary responsibilities include developing and managing new programs for the company, conducting consulting studies, managing aircraft cost and performance databases, and providing customer computer support. He was an Instructor Pilot with the U.S. Air Force for eight years, handling aircrew training, operations scheduling, and coordination of flight test support with civil and military test engineers. Mr. Wyndham has a Master of Aeronautical Science from Embry-Riddle Aeronautical University and has a Bachelor of Science in Mathematics from the University of New Hampshire. He also has an ATP certificate.

Nel Stubbs

Vice President INFO

Nel Stubbs

Ms. Stubbs joined Conklin & de Decker in 1999 and has been in the business aviation industry for more than 25 years. She consults with numerous companies and individuals on aviation tax-related matters at both the federal and state levels and has extensive experience in the areas of tax planning, cost and financial analysis, budgeting, aircraft ownership, operating structures and tax audits. Ms. Stubbs is instrumental in developing and supporting the Conklin & de Decker seminar program and marketing efforts. She was formerly with the National Business Aviation Association (NBAA) and developed the tax program during her tenure and was very instrumental in developing the NBAA’s first comprehensive aircraft cost comparison program. Ms. Stubbs has a Bachelor of Arts in Mathematics and a Master of Aeronautical Science.

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