The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of 14 units of flight-critical replacement parts, identified by NSN 7R-3010-123915959-SX. This procurement requires Government source approval prior to contract award, as the technical data available has not been deemed adequate for full and open competition, meaning only previously approved sources will be solicited. Interested vendors must submit comprehensive technical data and documentation as outlined in the NAVSUP WSS Source Approval Information Brochures, and failure to provide the required information will result in disqualification from the award process. For inquiries, interested parties can contact Connor C. Lewis at (215) 697-4757 or via email at CONNOR.C.LEWIS@NAVY.MIL.