Graham Takes a Second to Spare

September 18th, 2018


Graham Partners, a private investment firm targeting industrial technology and advanced manufacturing companies, is pleased to announce that its portfolio company, Desser Holding Company LLC (“Desser”), a leading global total aviation support provider, has acquired AOG Aviation Spares, LLC and Seginus LLC (“AOG / Seginus”). Located in Oswego, Illinois, AOG / Seginus provides component repair and overhaul services to the domestic and international aerospace industry and also produces replacement PMA (Parts Manufacturer Approval) parts that are sold to airline operators, repair stations, and global distributors.

AOG / Seginus adds a highly complementary business to the Desser platform, expanding Desser’s products and services and providing synergistic cross-selling opportunities. Additionally, the acquisition of AOG / Seginus will expand Desser’s in-house PMA expertise and further enhance Desser’s sales offering of proprietary products. Chris Lawler, Managing Principal at Graham Partners, states, “AOG / Seginus has experienced significant growth driven by the company’s impressive product and repair development capabilities and strong customer relationships. We are excited to add AOG / Seginus’ engineering depth and experience to the combined business, which will be a valuable asset as Desser launches its own proprietary products.” Steven Graham, Senior Managing Principal of Graham Partners, adds, “Add-on acquisitions have always been a fundamental component of value creation for our companies, and this acquisition is no exception. We look forward to integrating AOG / Seginus and realizing the potential of this combination.”

About Desser (
Desser, headquartered in Montebello, CA, is a leading global total aviation support provider serving customers in over 150 countries. Desser has an extensive sales offering including PMA (Parts Manufacturer Approval) design and development, DER (Designated Engineering Representative) repairs, and a wide network of distribution and maintenance solutions, including a particular focus on aircraft tire products. The company holds Federal Aviation Administration (FAA) and European Aviation Safety Agency (EASA) approvals for its broad range of aviation applications, including high speed aircraft tire retreading, aircraft wheel and brake services, and aviation transparencies and hydraulic hose assemblies for aftermarket use. Desser is AS9100 approved and has facilities in Australia, the United Kingdom, and the United States to support commercial airlines, repair stations, and OEMs worldwide through its affiliates Aero Wheel & Brake Service, Cee Bailey’s Aircraft Plastics, Watts Aviation, Rotable Repairs, AOG Aviation Spares, and Seginus.

Chris Lawler (
Christina Morin (
Tel:  (610) 408-0500