TransDigm Group Incorporated develops, distributes and manufactures commercial and military aerospace components such as mechanical actuators and ignition systems.

Transdigm Incorporated was established in 1993 by W. Nicholas Howley and Douglas W. Peacock after acquiring Adel Fasteners, Aero Products Component Services, Controlex Corporation and Wiggins Connectors from IMO Industries.

Four years later, in 1997, the company purchased Marathon Power Technologies.

The next year, Transdigm Incorporated was acquired by Odyssey Investment Partners.

Then, during the final two years of the century, the company added to its list of acquisitions with Adams Rite Aerospace and Christie Electric.

In May 2001, Transdigm Incorporated procured Champion Aviation Products, a supplier of igniters, spark plugs and oil filters from Federal-Mogul Corporation for approximately $160 million. It was at this time that Nicholas Howley took over the position of Chief Executive Officer from Douglas Peacock as Peacock transferred into his role as Chairman of the Board.

In 2003, Transdigm Group Incorporated was formed by Warburg Pincus Private Equity VIII to acquire Transdigm Incorporated. This transaction materialized shortly after TransTechnology Corporation sold Norco, Inc. to Marathon Power Technologies.

Then, in 2004, Transdigm Group procured Avionic Instruments of Avenel, New Jersey, a supplier of specialized power conversion devices for aerospace products.

The following year, Transdigm Group purchased Skurka Engineering of Camarillo, California, a manufacturer and distributor of electromagnetic equipment as well as the Fluid Regulators division of Esterline Technologies, who manufactures flight control valves and pressure valves.

In June 2006, the company then procured both Sweeney Engineering and Electra-Motion Industries for a grand total of $27 million, along with CDA InterCorp in October of that year for an additional $45 million. Three months later, Aviation Technologies, a producer of avionics and instruments, became a part of the TransDigm family followed by Bruce Industries, a producer of fluorescent aircraft lighting, in August 2007.

On January 20, 2017, Citron Research (CR) published a report on TransDigm highlighting its debt-financed acquisitions followed by deep cost cuts and "price gouging". CR published another report on March 9, 2017, accusing TransDigm of illegal activity, noting that twelve of its subsidiaries failed to report their common ownership on federal forms under penalty of perjury. CR pointed out that this omission could be used to defeat federal procurement cost controls.

On March 20, 2017, U.S. Representative Ro Khanna sent a letter to the Department of Defense Inspector General describing reports of "waste, fraud, and abuse" by TransDigm Group and calling for an investigation. He wrote that TransDigm was able to operate as a "hidden monopoly" because its subsidiaries failed to report their common corporate ownership on filings with the Department of Defense (DoD). This omission allowed TransDigm to avoid the requirement that monopoly suppliers to DoD report their costs. The letter also cited several large price increases that occurred after the suppliers had been acquired by TransDigm. For example, a cable assembly increased in price from $1737 to $7863. Rep. Khanna's letter asked the DoD Inspector General to investigate (1) TransDigm price increases borne by DoD and whether performance improvements were behind the increases, (2) how procurement officers would have treated TransDigm differently had their filings been accurate, (3) how to lower short-term costs to DoD of procurement from TransDigm subsidiaries.