NAVSUP WSS Philadelphia intends to solicit on a sole source basis with Boeing for one spare part: Side, Plenum Assy LH, quantity 1, with delivery FOB origin. Boeing is the Original Equipment Manufacturer and the only known source; no drawings or data are available, and the government does not own the data rights. A Source Approval Statement applies, and any firm not already approved must submit a Source Approval Request, but the procurement will not be delayed for that approval. This notice is not a request for competitive proposals, though all responsible sources may submit capability statements, proposals, or quotations for consideration. The anticipated award date is November 2026, and the solicitation will be posted using electronic procedures.