The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of a discrete output part identified by NSN 7R-6110-015773455-H1. 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 required for full and open competition is not available. Interested parties must provide comprehensive documentation to demonstrate their capability and experience in producing similar items, with a focus on maintaining the quality standards set by the Government. Proposals must be submitted within 45 days of this notice, and inquiries can be directed to Dina M. Wojciechowski at (215) 697-1219 or via email at DINA.M.WOJCIECHOWSKI.CIV@US.NAVY.MIL.