The Department of Defense, through the Defense Logistics Agency, is conducting market research for the procurement of hydraulic servovalves specifically for the KC-135 aircraft. This Sources Sought Synopsis aims to identify potential sources capable of manufacturing new spare parts, with interested vendors required to demonstrate their capabilities in labor, materials, and logistics. The initiative is crucial for maintaining the operational readiness of the KC-135, a vital component of the U.S. Air Force's aerial refueling capabilities. Interested parties must submit a Source Approval Request and complete a business information form by contacting 423 SCMS at 423.SCMS.AFMC.RFI@us.af.mil, as no solicitation is currently available and responses will be treated confidentially.