TRANSDIGM GROUP INC

TransDigm Group designs and manufactures proprietary aerospace components, including flight-critical parts like actuators, valves, and power systems, for both commercial and military aircraft. The company’s business model is materially dependent on defense contracts; its specialized products are integral to military platforms, and defense revenue constitutes a significant portion of its sales. A 2024 academic study compiling SIPRI data listed TransDigm among major arms-producing companies.

The company has been the subject of sustained scrutiny for its pricing practices on sole-source military spare parts contracts. A February 2019 Department of Defense Inspector General report, "Review of Parts Purchased From TransDigm Group, Inc.," found the DoD had paid nearly $21 million in excess profits. In a May 2019 congressional hearing before the House Oversight and Reform Committee, Pentagon officials testified that TransDigm had "gouged our taxpayers" with price markups as high as 4,451% on parts between 2015 and 2017. The hearing examined the company's strategy of acquiring manufacturers with proprietary, sole-source contracts and then sharply increasing prices. In July 2024, a group of U.S. senators cited these patterns in calling for further DoD, FTC, and DOJ scrutiny of TransDigm's acquisition of two specialized aerospace contractors.