Churchill Corporation was founded in 1948 as Churchill Lighting Corporation, a manufacturer of light fixtures. In the early 1950's, the company realized the increasing pressures to mass produce and decided to change its business radically by focusing on the manufacture of higher tolerance, higher quality products in the growing aviation field, specifically the area of aviation electronics (avionics). Located about 15 minutes north of Boston, Churchill is a family-owned business that designs and fabricates "black box" enclosures (also known as ATR boxes) for avionics OEM's and aircraft manufacturers. Today, Churchill maintains this business focus by supplying standard and customized avionics enclosures and related products.

Churchill Corporation has worked closely in the development of ARINC 404 and ARINC 600 and continues to play a key role in the promotion of standard avionics enclosures. With over 45 years experience, Churchill is a design and manufacturing company that focuses on producing high quality, affordable avionics enclosures and related components for aerospace companies worldwide.