Meet the Team!

Contrail Aviation Support, LLC has a team of highly trained and motivated professionals, handling sales and acquisitions, financing/administration and quality/warehouse functions. With over 100 years of combined experience, responding to customer requirements and concerns in a timely, professional manner is our number one priority.



Joseph Kuhn, CEO – Joe founded Contrail Aviation Support, LLC in 2000. Prior to Contrail, Joe began his aviation career in 1992 at Mitchell Aircraft in Chicago, IL where he established his reputation and built his sales acumen while working with many domestic and international accounts including United Airlines, Air Canada and Air New Zealand. In 2000, Contrail Aviation opened its doors in response to the consolidation within the airline industry.  Within months, Contrail Aviation Support quickly became one of the most respected suppliers of surplus engine material. With his knowledge of the industry and the insight into market trends, Joe continued to expand Contrail’s presence into the various engine models that power many of the commercial narrow body aircraft including the  CFM56 -3/5/7 and V2500A5. Joe built Contrail Aviation Support, LLC from the ground up, from a start-up enterprise into a well capitalized, resourceful and highly respected company that is responsive to industry trends while continuing to exceed customers’ expectations as a trusted supplier of surplus material.
Contact Joseph Kuhn at

Miriam Cohen-Kuhn, CFO – Miriam is one of the founding members of Contrail Aviation Support, having implemented the financial and accounting systems at the company’s inception.  Before joining Contrail, Miriam worked at several Fortune 500 consumer goods companies and consulting firms in the areas of business planning, marketing, product line profitability and business unit management.  She brings with her a vast knowledge of all facets of operations including accounting, business strategy, and financial planning. Miriam is currently responsible for all key areas of the company’s financial and accounting operations as well as business administration.  She graduated with honors from the University of Rochester and received her MBA from the University of Michigan.
Contact Miriam Cohen-Kuhn at

Jeff Preininger, Director of Sales – Jeff joined Contrail Aviation Support in 2003 and has been a significant factor in Contrail’s immense growth and development. He graduated in 1992 from the Pittsburgh Institute of Aeronautics receiving a degree in specialized technology and obtaining his Airframe and Powerplant license. He began his career disassembling engines then proceeded into the position of Quality Control Inspector. Jeff then transitioned within the industry to the position of Quality Manager. In 1999, he moved into sales, consistently solidifying and expanding both his customer base and vendor relationships.  Since joining Contrail in 2003 as Contrail’s Director of Sales, Jeff has continued to build his technical knowledge and expertise within the narrow body segment as a way to provide the highest level of service to our customers.
Contact Jeff Preininger at

Daniel Wingert, Director of Quality Assurance & Operations – Daniel began his career in the aviation industry in 1999 as a Quality Assurance Inspector. He worked closely with Quality and Operations Directors, gaining hands-on experience with the inspection of parts, warehousing, and commercial traceability, Advisory Circular 00-56A and the ASA-100 standard. Daniel maintained the highest level of quality while expanding his knowledge of the aviation aftermarket and logistics management. From there, he accepted a position in Traffic and Customs Compliance where he served as a vital link in operations, communicating with numerous departments including engineering, quality, manufacturing and shipping/receiving. In 2005, Daniel joined Contrail Aviation Support as our Quality Assurance Manager and has gained considerable knowledge and experience in the evaluation and procurement of turbofan engines.
Contact Daniel Wingert at

Steve Williamson, Director of Acquisitions and Trading – Steve Williamson joined Contrail Aviation Support, LLC in February 2017 with a decade of experience in the aviation finance and commercial aircraft industry with core competencies in financial analysis, mid-life aircraft management and client services. Most recently, Williamson was Senior Director, Asset Transaction Group of GA Telesis, LLC, one of the world's largest commercial aerospace firms offering aircraft leasing, aircraft overhaul and repair, and aircraft replacement parts. In his role at GA Telesis, Williamson was responsible for the initial underwriting and analysis of select multi-million-dollar transactions as well as overseeing multiple stages of the purchase, sale and leasing of related commercial jet engine components. Previously, Williamson held account management and support positions with Brickhouse Capital, an equipment leasing and financing provider, as well as with Rolls Royce, as it related to corporate aircraft engine sales and customer database operations.
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Sebastian Lourier, Director of Leasing & Asset Management – Sebastian Lourier joined Contrail Aviation Support, LLC in February 2017 as Director of Leasing & Asset Management. Lourier has over 15 years of aviation finance and operations experience with core competencies in aircraft engine leasing and trading. Most recently, Lourier was Vice President, Sales and Lease Management of Fortress, Inc., a global investment management firm (New York and Dubai). In his role at Fortress, he identified and executed on aircraft and engine sales, and leasing opportunities, by maintaining a comprehensive global network of relationships with leasing companies, major airlines, MROs, OEMs and trading companies as well as being responsible for leasing related day-to-day operations, including aircraft and engine maintenance contracts and portfolio management. Previously, Lourier was Director, Portfolio Management of Aviation Capital Group, LLC, a worldwide provider of aircraft leasing to airlines, and Director, Supply Chain of US Airways. He was also a Senior Financial Analyst at Northwest Airlines (now Delta) and America West Airlines. Lourier holds an MBA in Aviation, Embry Riddle Aeronautical University with a focus on analysis of aircraft value forecasting techniques and Bachelor’s in Industrial Engineering, Rheinische Fachhochschule Köln – Germany.
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Jason Kilgore, Sales Account Manager – Jason began his Sales Support career at Contrail Aviation Support in 2009. He joined the team with a 20 year background in sales and customer service. Jason works closely with the Director of Sales and serves a critical role in Contrail’s day to day sales activities. He is an indispensable resource for our most important asset – our customers.
Contact Jason Kilgore at



Jackie Servi, Office Manager – Jackie joined Contrail Aviation Support in 2010. She manages the overall office functions including record management and performs day to day accounting and invoicing. She has a substantial history in customer service, accounting, and office administration. She carries with her a Bachelor’s degree in Business with over 10 years experience.
Contact Jackie Servi at