The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of power supply replacement parts, identified by NSN 7R-1680-016460637-E7, with a quantity of 8 units required. The procurement necessitates engineering source approval due to the flight-critical nature of the item, which mandates that only approved sources may submit proposals; new sources must undergo a qualification process as outlined by the Government engineering activity. Interested parties must provide comprehensive documentation as specified in the NAVSUP Source Approval Information Brochures, and proposals must be submitted within 45 days of this notice, with contact inquiries directed to Brittany N. Kirkgard at (215) 697-0283 or via email at brittany.n.kirkgard.civ@us.navy.mil.