The Department of Defense, specifically the U.S. Air Force, is seeking proposals for the procurement of the F100 220 Rear Turbine Case, a critical component for aircraft engines. This sole source requirement is designated for Barnes Aerospace, Inc., and involves the acquisition of a nickel alloy part that is integral to the Low-pressure Turbine assembly, measuring 24 inches in length and width, 12 inches in height, and weighing 25 pounds. The solicitation, identified as RFP number FA8121-25-R-0021, is set to be issued on May 9, 2025, with a closing date of June 9, 2025, and emphasizes compliance with qualification requirements, as well as the necessity for First Article Testing for newly approved sources. Interested parties should note that funding is not currently available, which may affect the solicitation's status, and can reach out to Ryan Boudreau or William Heckenkemper via email for further inquiries.