Greenbriar Equity Group to Acquire Spectrum Control from AEA Investors

Greenbriar-backed Applied Aerospace and PCX Aerosystems Combine to Form Applied Aerospace & Defense

December 3, 2025

Aerospace & Defense

Greenbriar Equity Group has formed a new platform, Applied Aerospace & Defense, by combining Applied Aerospace and PCX Aerosystems to create a scaled supplier of precision flight, space and defense hardware. The combined company brings complementary capabilities in metal, composite and polymer manufacturing, more than 1,300 employees across nine locations in five states, and 1.3 million square feet of production and integration facilities to serve military, commercial aerospace and space customers.

Greenbriar Equity Group Acquires West Star Aviation from The Sterling Group

May 21, 2025

Aerospace & Defense

Funds managed by Greenbriar Equity Group have acquired West Star Aviation, a leading business aviation maintenance, repair and overhaul (MRO) provider, from The Sterling Group. Financial terms were not disclosed; Greenbriar said it will leverage its aviation aftermarket experience to accelerate West Star's growth and enhance its service capabilities across the company's national facilities and AOG technician network.

Greenbriar Equity Group Acquires Sunvair Aerospace Group from Blue Sea Capital

June 5, 2024

Aerospace & Defense

Funds managed by Greenbriar Equity Group completed the acquisition of Sunvair Aerospace Group, a U.S.-based aircraft component MRO specialist, from Blue Sea Capital. Greenbriar said the investment will support Sunvair's organic growth and acquisition strategy to expand its engineered MRO capabilities across landing gear, avionics and accessory repairs.

DuPont Acquires Spectrum Plastics Group from AEA Investors

August 2, 2023

Medical Devices

DuPont de Nemours, Inc. agreed to acquire Spectrum Plastics Group from AEA Investors in a definitive buyout expected to close in Q3 2023; the purchase is funded from DuPont's existing cash balances. Spectrum is a contract design and advanced manufacturer of specialty medical devices and components (serving top medical device OEMs) and will expand DuPont's healthcare and medical-device materials and manufacturing capabilities.

Greenbriar Equity Group Acquires Applied Aerospace Structures Corporation

December 8, 2022

Aerospace & Defense

Funds managed by Greenbriar Equity Group acquired Applied Aerospace Structures Corporation (AASC), a Stockton, California-based provider of complex composite and metal-bonded structures for space, aerospace, and defense programs. The investment will support AASC's growth and expansion plans — including organic growth and selective acquisitions — while financial terms were not disclosed.

Allied Motion Acquires Spectrum Controls, Inc.

December 31, 2021

Manufacturing

Allied Motion Technologies Inc. acquired Spectrum Controls, Inc., a Bellevue, Washington–based designer and manufacturer of industrial I/O modules, displays and communications gateways, for a total purchase price of $70 million (approximately $45 million paid at closing, with $25 million deferred). Spectrum, founded in 1983 with about 72 employees, will expand Allied Motion’s industrial automation product portfolio and engineering capabilities and is expected to be accretive to earnings and gross margin.