The U.S. Air Force’s 421st SCMS at Tinker AFB, Oklahoma, is conducting market research to identify potential sources for new spares procurement/manufacture of a J85 compressor rotor (P/N 5126T28G08; NSN 2840016309064OK). Potential sources must be capable of providing labor, materials, facilities, and equipment for component manufacture, inspection, testing, preservation/packaging, and shipping, and may handle supply chain management, logistics planning, forecasting, long-lead procurement, diminishing manufacturing sources, and material shortages. The estimated spares requirement date is October 29, 2026, and interested sources may need to complete a Source Approval Request package per the qualification requirements; technical data may be limited. All business types are encouraged to respond, but no solicitation is currently available and no funds are available for the requested market research information. Place of performance is Tinker AFB, OK 73145 USA.