The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure 10 units of a flight-critical underwater sound equipment part, identified by NSN 7R-5845-016433222-P8. The procurement requires engineering source approval from the design control activity to ensure the quality of the part, as only approved sources will be considered for the contract due to the unique design and manufacturing knowledge required. Interested vendors must submit detailed information regarding their qualifications and experience, as well as any source approval requests, within 45 days of this presolicitation notice. For further inquiries, potential bidders can contact Kelly A. Gipson at (215) 697-4787 or via email at KELLY.A.GIPSON1@NAVY.MIL.