The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure four units of the Analog I/O Module, NSN 7R-6130-015892473-P8, under a presolicitation notice. 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 for the part is not sufficiently available for open competition. Interested parties must provide detailed documentation to demonstrate their capability and experience in producing similar items, with a submission deadline of 45 days from the notice publication date. For further inquiries, Gina P. Sassane can be contacted at (215) 697-2198 or via email at GINA.P.SASSANE.CIV@US.NAVY.MIL.