Belcan, LLC on Wednesday said it has acquired AVISTA, a former business unit of TransDigm Group Inc. [TDG], adding safety and mission critical software engineering services for the aerospace, defense and medical industries.

Terms of the deal were not disclosed. AVISTA, which is based in Wisconsin, has about 100 employees and the majority of their sales are from aerospace and defense customers.

AVISTA has capabilities in software engineering, verification and validation services, and certification.

“We’re impressed with AVISTA’s highly-skilled and experienced team who have long-standing relationships with their outstanding customer base,” Lance Kwasniewski, Belcan’s CEO, said in a statement. “AVISTA and its engineers will add greater technical depth to Belcan’s Systems and Software Engineering Group and provide us with a larger footprint in the Midwest.”

AVISTA President Steven Ungs and the company’s management team will remain with the company.

In the defense space, AVISTA’s has created solutions for flight management systems, flight planning and flight-formation systems, GPS-driven precision mapping, and satellite communications. Some of the company’s defense platforms it was provided solutions for include the KC-135 refueling tanker, the C-17 and C-130 airlifters, the S-70 Seahawk helicopter, and the F-15E strike fighter.

Belcan is a portfolio company of the private equity firm AE Industrial Partners.

TransDigm’s financial adviser on the deal was Seabury Securities and Belcan was advised by PricewaterhouseCoopers.