Meet the ACI Jet
Leadership Team.

Driven by a passion for aviation, integrity, professionalism, customer service and overall excellence in all phases of operations, ACI Jet's leadership team is dedicated to supporting our clients and employees. Believers in strong communication, personal development, and employee empowerment, the ACI Jet leadership team will stop at nothing to deliver a quality experience clients and employees have come to expect.

Learn More About ACI Jet

Executive Team

William Borgsmiller
President / CEO

Bill Borgsmiller started his aviation career at the age of 12 by working part-time for a small 135 operation in Red Bluff, CA that flew Cessna 210s’ in support of Forrest Service operations. Over the next 6 years, Mr. Borgsmiller worked for and managed the small FBO at the Red Bluff Airport while working to obtain his Commercial Pilot’s License and A&P Certificate. After graduating High School, he attended Embry-Riddle Aeronautical University where he completed a Bachelor’s Degree in Aeronautical Science and furthered his flight training with the addition of an ATP, CFI, CFII, MEI, and SES ratings. Upon completion of college, Mr. Borgsmiller moved to Redding, CA where he worked as a First Officer and Co-Captain for Sierra Pacific Industries aboard their King Air 200, Conquest II, and Hawker 1000. In 1998, he founded ACI Jet and spent two years working as a regional representative for Texaco aviation products covering Northern CA and Nevada from his home base in San Luis Obispo. Since leaving that position, he has worked full time within his business as the President and CEO. During his time with ACI Jet he has also graduated from Harvard Business School’s General Management program, obtained his rotorcraft license, and completed the NBAA Certified Aviation Manager (CAM) certification.

Olivier Leclercq
Executive Vice President

Olivier Leclercq was born and raised in Roubaix, France. He volunteered and enrolled with the French Paratrooper’s on his 17th birthday and later served as the youngest ever non-commissioned officer of a RPIMA Paratrooper French Marine’s Regiment.  After the military, he joined Decathlon, which was founded by his father in 1976.  During his time there, Olivier proved himself as an accomplished businessman and entrepreneur.  In 1986 He initiated the production of numerous products and spent 12 years based in various Asian countries. Following that, he progressed with the company as a Board Member, Audit Committee President, Chairman of the Investment Strategic Committees, and ultimately served as the Group President.  By the time Olivier left in 2012, he had grown Decathlon into the largest sporting good production and retail organization in the world, employing over 55,000 people in 20 countries with over a dozen specific brands.

He is succeeded at Decathlon by his younger brother Matthieu and has since then served as a Managing General Partner and Vice President of the Strategic Committee for the Mulliez family holdings which employs more than 520,000 people in various industries throughout 30+ countries.  Mr. Leclercq joined ACI Jet as an investor and Executive Vice President in 2014. With his extensive background in the retail industry, he brings a deep knowledge of and passion for marketing and the customer experience to the company.

Nathan Ross, CPA
Chief Financial Officer

After graduating from Cal Poly State University in San Luis Obispo, California in 2001 with a BS in Public Accounting and a minor in Mathematics, Nathan joined the CPA firm of Barbich Longcrier Hooper & King. He provided accounting, tax planning, and tax preparation services for various multi-state and multinational corporations, as well as many smaller companies, individuals, estates and trusts. Nathan has his CPA license through the California Board of Accountancy and is an active member of the California Society of CPA’s. In 2003, Nathan joined ACI Jet as Controller and later was given the title of Chief Financial Officer in 2006. Nathan grew up with a fascination of aviation, and when offered the position with ACI Jet, saw it as an opportunity to once again be a part of the aviation community. Nathan has since become an expert in various financial, regulatory, and administrative aspects of the industry.

Kellee Valentine
Senior Vice President, Flight Operations

Kellee was raised in a suburb of Kansas City, Missouri, and began his aviation career at a young age when he was awarded the Anne Marie Morrissey scholarship to begin his flight training.  Within a year of earning his private pilot’s license, he had attained his Instrument Rating, Commercial License, CFI, CFII, AGI, and MEI.  Kellee began his professional career flying a Cessna Caravan, Piper Aerostar, and Cessna CitationJet in Northern Ohio for a small operator flying single-pilot on-demand freight and passengers.  In 2004, Kellee was offered a Captain position flying a CitationJet2 with ACI Jet. In 2005 he was promoted to Captain on the Citation X.  Kellee has been a Captain in every type of aircraft ACI Jet operates, including the Citation XLS, Gulfstream IV-SP, Challenger 604, and Gulfstream 650 which he currently flies as a line Captain, and FAA approved Check Pilot. In 2012, Kellee became part of the ACI Jet management team when he was promoted to the position of Chief Pilot. In February of 2015, Kellee was promoted to his current position of Vice President of Flight Operations.

Dave Jensen
Senior Vice President, Aircraft Maintenance

As one of the first Aircraft Technicians to join ACI Jet, David Jensen has been serving in various maintenance leadership roles for the company over the past decade before assuming his current role as ACI Jet's Vice President of Aircraft Maintenance. A Central Coast native, Dave found a love for aviation very early in life. Immediately after high school Dave joined the United States Air Force as a flying crew chief on KC10’s. During his time in the Air Force Dave gained extensive knowledge and experience maintaining aircraft and leading teams in very diverse locations and high pressure situations. After the Air Force, Dave joined ACI Jet as a Maintenance Technician where he put his training to work and was quickly promoted to Shop Supervisor. Over the next 8 years Dave assisted in developing the maintenance department into an FAA certified Part 145 Repair Station with a staff of highly qualified, factory trained technicians. During this time Dave was promoted to ACI Jet’s Director of Maintenance where he used his industry experience to help expand ACI Jet's charter fleet to 12 aircraft, 5 of which are large cabin. In 2015 Dave was promoted to Vice President of Aircraft Maintenance where he oversees all aspects of maintenance for both the Part 135 charter certificate and the Part 145 Repair Station.

Andrew Robillard
Vice President, FBOs & Facilities

Andrew began his aviation career in 2002 as a Line Service Technician working in Sacramento,California.  While working the line, Andrew attended Sacramento City College, and in 2004 he received his Aircraft Maintenance Technician certificate with ratings to perform maintenance on aircraft airframes and aircraft powerplants. He then went on to graduate from Embry-Riddle Aeronautical University with a Bachelor of Science degree in Professional Aeronautics, and with minors in Aviation Safety and Management.  Andrew also has his private pilot certificate with an instrument rating.  In 2005, Andrew joined ACI Jet as a Line Service Technician.  Over the past seven years, Andrew has held positions such as ground service equipment manager and line service technician supervisor, and he is currently the Vice President of ACI Jet's three FBO locations.  He is motivated by his passion for customer service, and he works to ensure that all of our client’s expectations are exceeded.

Flight Operations Team

 ​Trevor Totman
Dispatch Manager

Trevor Totman was born and raised in Orange County, California. After moving to California’s Central Coast in 2001 to pursue his degree in Management Information Systems at Cal Poly San Luis Obispo, he was approached 2003 by ACI Jet and offered the opportunity to run their newly formed dispatch department. Having spent the previous four years working in customer service, Trevor brought both a technical and service oriented approach for the budding department. Utilizing his technical background Trevor setup, implemented, and operated scheduling software that, to this day, is essential to ACI Jet’s day to day operations.  Additionally, Trevor’s exceptional customer service skills assisted in, and was an integral part of, building and developing ACI Jet’s client base and reputation as an industry leader in service. In 2007, Trevor further advanced his aviation knowledge by becoming a licensed FAA Dispatcher. After managing ACI Jet’s dispatch department for twelve years, successfully improving the department’s efficiency and long term sustainability; Trevor has once again taken on a new challenge in the role of Executive Travel Director for ACI Jet. Trevor’s primary focus is ensuring that ACI Jet’s Owners and clients receive the unique, and unparalleled private aviation experiences that ACI Jet is known for.

Brian Felt
Director of Maintenance

​A California native, Brian Felt began his aviation maintenance journey after transferring from College of the Canyons in Santa Clarita, California to the North Valley Occupational Center at Van Nuys Airport. There, Brian worked toward obtaining his aircraft Airframe & Powerplant (A&P) Certificate while working full time for Western Jet Aviation, a Gulfstream Service Center, then for another Part 135 large-cabin aircraft operator based at the airfield. Brian’s interest in corporate aviation began at a very young age, as he visited close friends and family members, including his father, who made their livings working on jet aircraft. Almost from the start, Brian’s career has been characterized by big accomplishments in small timeframes, serving as a testament to his work ethic and determination. With the Part 135 operator in Van Nuys, shortly after receiving his A&P Certificate, Brian became the company’s Chief Inspector. At ACI Jet, Brian climbed the ranks from Maintenance Technician to Director of Quality in just three short months, and a year later he now holds the Director of Maintenance position with ACI Jet. Brian enjoys outdoor activities, including camping and waterskiing, making the Central Coast of California his ideal place to call home. Currently, Brian is working on obtaining his Private Pilots’ License by training on aircraft available in the company’s Employee Flight Department.

FBO Team

Luke Newlon
General Manager, FBO San Luis Obispo (SBP), Paso Robles (PRB), and Oceano (L52)

Luke started his aviation career in the Navy while serving on the flight deck onboard the Aircraft Carrier USS Dwight D. Eisenhower and the USS Abraham Lincoln. After his service, Luke attended California State University, Fresno. Luke served as the President of the Student Veterans Organization and continued his aviation career as a civilian contracted plane captain with VFA-125 at the Naval Air Station Lemoore. Luke relocated to the central coast with his wife Kaitlin and started his career at ACI Jet in 2012. During his first two years at ACI Jet, Luke completed an MBA program and was quickly promoted to General Manager of ACI Jet San Luis Obispo.  In addition to handling all GA and Business Aviation at San Luis Obispo, Luke has been critical in the expansion of airlines services of Alaska and United Airlines.  Currently, Luke is operating the company's three Central Coast locations and overseeing the construction of a new $16 Million dollar facility in San Luis Obispo, which will soon be the most modern FBO in the country.

Nathen SteigerNathen Steiger
General Manager, FBO Orange County, CA (SNA)

An experienced pilot himself, Nathen Steiger is no stranger to the complex operations that take place within the Southern California airspace and at the vibrant airports that serve it. Mr. Steiger has more than 1,500 hours as a Certified Flight Instructor (CFI), helping bring wings to new and aspiring pilots. His own passion for aviation and pursuit of a career in aviation grew from his admiration for pilots, who he looked up to as super heroes. Prior to ACI Jet, Mr. Steiger served as Assistant General Manager for two private aircraft FBO facilities in San Diego. Integrity is an important character trait to Mr. Steiger, and while he prefers a hands-on approach to management, he relies on identifying qualified people that he can trust to help carry out his vision. As the General Manager of ACI Jet’s Orange County, California FBO (SNA), Nathen is tasked with ensuring that aircraft owners, flight crews and passengers experience a level of service that is unique and memorable by leading all aspects of the facility’s operations and personnel. Nathen also serves as an ambassador on behalf of ACI Jet to the greater Orange County area and identifies new ways that we can serve our community. Nathen enjoys surfing, rock climbing, basketball, cross-fit, and other outdoor activities that beneficiaries of the Southern California weather enjoy nearly year-round.


Based in San Luis Obispo, California since 1998, ACI Jet is a global aviation company providing world-class corporate aircraft management, charter, maintenance and ground support services. Recognized as an industry leader in service, safety, and flight support, ACI Jet is committed to exceeding client expectations by providing unparalleled private aviation experiences.

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