The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of aircraft propellers, identified by NSN 7R-1610-008871944-BP. The procurement involves a quantity of four units, with strict requirements for engineering source approval to ensure the quality and safety of the flight-critical components. This opportunity is classified as a sole source requirement, meaning that only previously approved sources may submit proposals, and interested parties must provide comprehensive documentation as outlined in the NAVSUP WSS Source Approval Brochure. For further inquiries, potential bidders can contact Katlyn M. Galetto at (215) 697-6549 or via email at Katlyn.Galetto@navy.mil, with proposals due within 45 days of the notice publication.