The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of a turbine bleed valve, identified by NSN 7R-2840-015425347-SX. The procurement involves a quantity of 18 units, which are flight critical and require government source approval prior to contract award, as the technical data available does not support full and open competition. Interested vendors must provide detailed information as outlined in the NAVSUP WSS Source Approval Information Brochures, and failure to submit the required documentation will result in disqualification from the award process. For further inquiries, potential bidders can contact Connor C. Lewis at (215) 697-4757 or via email at CONNOR.C.LEWIS@NAVY.MIL.