The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of three units of the FAN ASSEMBLY, HYDRAU, identified by NSN 7R-1660-013021006-YR and reference number 209-040-016-107. This procurement requires engineering source approval due to the flight-critical nature of the item, necessitating that only approved sources may submit proposals, as the technical data and manufacturing knowledge are not readily available to the Government. Interested parties must ensure compliance with the Source Approval Information Brochures and submit all required documentation with their proposals, as offers lacking necessary data will not be considered. For further inquiries, interested vendors can contact Jake Kucowski at JAKE.KUCOWSKI.CIV@US.NAVY.MIL, with a proposal submission deadline of 45 days from the notice publication date.