The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of a flight-critical part identified as NSN 1R-9999-LLHPGJ389-V2, with a quantity of one unit required. This procurement necessitates engineering source approval from the design control activity to ensure the quality and reliability of the part, as it involves unique design capabilities and manufacturing knowledge that are not readily available to the Government. Interested vendors must be approved sources or provide detailed documentation for source approval, as the Government intends to negotiate with only one source under FAR 6.302-1. Proposals must be submitted within 45 days of this notice, and interested parties can contact Jake Kucowski at (215) 679-2012 or via email at JAKE.KUCOWSKI.CIV@US.NAVY.MIL for further information.