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Discover a complete range of aircraft advisory services. From desktop and on-site appraisals by our team of ASA-accredited appraisers to technical advice, maintenance event management and aircraft inspections. All powered by decades of independent maintenance data, experience and technical expertise on virtually every make and model of business jet, turboprop and helicopter.

Independent Expertise

As an independent company with a global footprint, JSSI Advisory Services is uniquely positioned to provide clients with consistent, professional, and cost-effective solutions for virtually all makes and models of business aircraft.

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    Professional, responsive, and flexible services to meet your needs
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    30+ years of aviation maintenance data at our fingertips
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    70+ technical experts worldwide
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    10,000+ maintenance events managed per year

Our Services


Our trusted aviation advisors will help you make informed decisions on aircraft acquisition planning, fleet analysis, tax planning, cost management, federal government compliance, and more.


Keep a finger on the pulse of your aircraft’s current value with a professional and cost-effective USPAP-compliant appraisal from one of our ASA-accredited appraisers, including on-site and remote desktop options.

Asset Inspections

Extend your asset management department with our team of technical experts to quickly and reliably inspect an aircraft or facility.

Maintenance Event Management

Ensure standards are met and your aircraft returns to service as efficiently as possible with the best team in the business monitoring your next maintenance event.

We're Here to Help

Our specialists are standing by with the capabilities and experience to deliver the answers you need.


Nel Stubbs
Director, JSSI Consulting
+ 1 (602) 791-3824

Bill de Decker
Chairman Emeritus
Conklin & de Decker
+1 (817) 704-2424

Brandon Battles
Director, Product Development
+1 (817) 320-4337

Appraisals, Inspections & Mx Event Management

George Kleros
SVP, JSSI Advisory Services
+1 (312) 796-8638

Evette Dube
Accredited Appraiser (ASA)
+1 (603) 421-6583

Steve Morgan
Mx Event Management
+1 (716) 925-0913

Let's Talk

Contact us today to find out how JSSI Advisory Services can become a vital extension of your asset management department and provide the data, knowledge and expertise you need to make informed decisions.

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