UTC Aerospace Systems (UTAS) was one of the world’s largest suppliers of aerospace and defense products, headquartered in Charlotte, North Carolina, United States.

UTC Aerospace Systems was also a major supplier to international space programs.

Ithaco has produced items for the field of satellite control since 1962, such as Earth sensors, reaction/momentum wheels, magnetometers and magnetic torquers.

[4] In addition to over 100 U.S. satellites, equipment made by Ithaco flew on Japanese, Canadian, French, German, Spanish, Swedish, and Argentinean spacecraft.

UTC Aerospace Systems announced layoffs at Ithaco Space Systems in August 2012 due to Ithaco having been "focused on space programs that have recently seen slower growth", and further layoffs at former Hamilton Sundstrand.