The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of 16 units of a flight-critical aircraft propeller component, identified by NSN 7R-1610-016199166-KE and reference number 826485-2-004. The procurement requires that only sources previously approved by the Government may submit proposals, as the technical data necessary for alternative sourcing is not available, making reverse engineering uneconomical. Interested parties must provide comprehensive documentation as outlined in the NAVSUP WSS Source Approval Information Brochures, and proposals must be submitted within 45 days of the notice publication, with the understanding that the Government may proceed with award based on Fleet support needs if source approval cannot be processed in time. For further inquiries, interested vendors can contact Arianna G. Pilla at (215) 697-2198 or via email at ARIANNA.PILLA@NAVY.MIL.