The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of four flight critical processors, identified by NSN 7R-6610-016916033-KB. The procurement requires that only sources previously approved by the Government be solicited, as the technical data necessary for alternative sourcing is not available, making reverse engineering uneconomical. This item is essential for flight operations, and interested parties must submit their proposals along with the required source approval documentation within 45 days of this notice. For further inquiries, Chad M. Fichter can be contacted at (215) 697-2782 or via email at CHAD.FICHTER@NAVY.MIL.