This is a sources sought notice for market research to identify potential sources for the spares procurement of a combustion chamber case (NSN 2840016697243PR, P/N 1864M53G01-129B) for the F110 platform. Interested parties must be capable of new manufacture, including labor, materials, inspection, testing, packaging, and potential supply chain management, and the government may consider breaking the requirement out by airframe. All business types are encouraged to participate by registering as interested vendors, as this may lead to a competitive or small business set-aside acquisition. Performance will be at Tinker AFB, Oklahoma. The estimated spares requirement period is June 2026 through June 2027.