The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of a Bulkhead Assembly for aircraft, identified by NSN 1R-9999-LLHP5Z561-V2 and reference number 901-031-111-441. This procurement requires engineering source approval due to the flight-critical nature of the part, necessitating that only previously approved sources may submit proposals, as the technical data necessary for full and open competition is not adequately available. Interested parties must provide detailed technical data and qualifications as outlined in the NAVSUP Source Approval Information Brochures, with proposals due within 45 days of the notice publication, and must contact Helen I. Carmelo at (215) 697-1138 or via email at HELEN.I.CARMELO.CIV@US.NAVY.MIL for further information.