The U.S. Navy intends to sole-source the procurement of 5 units of a specific aircraft seat (NSN 1680 016890941) for the CH-53K platform from Sikorsky, the Original Equipment Manufacturer. No technical drawings or data are available, and the government lacks the rights to purchase this part from other sources. All responsible parties may submit a capability statement or proposal for consideration, but any firm not already approved must submit a Source Approval Request (SAR), though the procurement will not be delayed for SAR approval. The anticipated award date is May 31, 2026, with delivery FOB origin. Performance location is not specified, and no budget amount is provided.