The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of 8 units of a combustion liner, identified by NSN 7R-2840-016784153-TN and reference number 6072T07G11. 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 required for production is not readily available to the Government. Interested parties must ensure they meet the qualification criteria set forth by the Government engineering activity and submit all necessary documentation, including any prior source approval requests, within 45 days of the notice publication. For further inquiries, potential bidders can contact Charles F. Horan at (215) 697-1303 or via email at CHARLES.F.HORAN@NAVY.MIL.