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Hamilton Sundstrand was a global aerospace and industrial company formed in 1999 through the merger of United Technologies' Hamilton Standard division and the Sundstrand Corporation. Both parent companies had rich, independent histories in aviation and industrial products. As a subsidiary of United Technologies Corporation (UTC), Hamilton Sundstrand designed, manufactured, and serviced a wide array of products. These included critical aircraft systems such as electric power generation and distribution, engine controls, environmental control systems, propellers, and emergency power systems. The company also had significant involvement in space systems, notably providing life support equipment and space suits for NASA. In 2012, United Technologies acquired Goodrich Corporation and subsequently merged it with Hamilton Sundstrand to form UTC Aerospace Systems. This entity was later combined with Rockwell Collins in 2018, creating Collins Aerospace. Collins Aerospace is now a major business unit of RTX Corporation. The pioneering spirit and technological advancements of Hamilton Sundstrand continue to be integral to the products and innovations offered by Collins Aerospace today.
Served as the global corporate headquarters, overseeing strategic direction, administrative functions, core engineering, and some manufacturing operations for its diverse aerospace and industrial product lines.
The Windsor Locks campus has historically been a major center for aerospace innovation, featuring advanced manufacturing facilities, extensive research and development laboratories, and specialized test centers. It is particularly known for its historical contributions to propeller technology and environmental control systems.
As a high-technology engineering and manufacturing firm, the work culture at Hamilton Sundstrand emphasized precision, innovation, safety, and collaboration. Employees were typically engaged in developing and producing cutting-edge aerospace technologies critical to aircraft and spacecraft.
The Windsor Locks site was significant not only as Hamilton Sundstrand's HQ but also as the historical home of Hamilton Standard, tracing its roots to early 20th-century aviation. It represented a major center of aerospace employment, technological advancement, and industrial heritage in the New England region.
Prior to its integration into Collins Aerospace, Hamilton Sundstrand maintained a significant global footprint to support its international customer base. This included manufacturing facilities, repair and overhaul (MRO) centers, engineering offices, and customer support operations strategically located in North America, Europe (e.g., France, UK, Poland), and Asia-Pacific (e.g., Singapore). These sites enabled the company to design, deliver, and service its complex aerospace and industrial systems worldwide, catering to commercial airlines, military organizations, and space agencies. This global network was essential for providing timely support and localized solutions to its customers.
One Hamilton Road
Windsor Locks
Connecticut
USA
Address: 4747 Harrison Ave, Rockford, IL 61125, USA (historical main Sundstrand campus, now a Collins Aerospace facility)
Served as a critical center for engineering talent and advanced manufacturing in the Midwest, continuing Sundstrand's legacy in aerospace power systems and high-precision components. It remains a key site for Collins Aerospace.
Address: 9000 Balboa Ave, San Diego, CA 92123, USA (representative of facilities in the area, now Collins Aerospace)
Leveraged the Southern California aerospace cluster for specialized talent, R&D partnerships, and proximity to key military and commercial aerospace customers. This presence supported diverse aerospace programs.
Address: 2551 W. Shamrell Blvd., Chandler, AZ 85224 (historical facility, now part of Collins Aerospace network in Arizona)
Tapped into the aerospace and defense industry ecosystem in Arizona, supporting various commercial and military programs with specialized engineering and production capabilities.
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As of April 2025, Hamilton Sundstrand' leadership includes:
Hamilton Sundstrand has been backed by several prominent investors over the years, including:
Hamilton Sundstrand ceased to operate as an independent entity in 2012 upon its merger into UTC Aerospace Systems (which later became part of Collins Aerospace). Therefore, there have been no executive new hires or exits specifically for 'Hamilton Sundstrand' in the last 12 months or since its dissolution as a standalone company.
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As Hamilton Sundstrand was integrated into UTC Aerospace Systems and subsequently Collins Aerospace, its original email domains are no longer in active use. Email communications for the functions previously under Hamilton Sundstrand now follow Collins Aerospace's current standards (typically @collins.com or @rtx.com). Historically, common formats for UTC subsidiaries like Hamilton Sundstrand could have included variations based on the company name or UTC's domain.
[first].[last]@hamiltonsundstrand.com or [first_initial][last]@hs.utc.com (speculative historical formats). These are no longer active. Current entity Collins Aerospace uses formats like [first].[last]@collins.com.
Format
jane.doe@hamiltonsundstrand.com (example of a speculative historical format)
Example
0 (Historical email domains are no longer active or valid)%
Success rate
UPI Archives • June 1, 1999
United Technologies Corp. announced it was combining its Hamilton Standard division with the recently acquired Sundstrand Corp. to create Hamilton Sundstrand. The new entity was positioned as a major supplier of a wide range of aerospace and industrial systems....more
United Technologies Corp. (Press Release via PR Newswire) • July 26, 2012
United Technologies Corp. announced the completion of its acquisition of Goodrich Corporation. Concurrently, Goodrich was merged with Hamilton Sundstrand to form a new business unit named UTC Aerospace Systems, becoming one of the world's largest aerospace suppliers....more
United Technologies Corp. (Press Release via PR Newswire) • November 27, 2018
United Technologies Corp. completed its acquisition of Rockwell Collins. UTC Aerospace Systems (which included the former Hamilton Sundstrand) was combined with Rockwell Collins to form Collins Aerospace, further expanding its capabilities and market presence....more
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