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 radar signal part, identified by NSN 7R-1680-016503573-RQ. The procurement is limited to approved sources due to the flight-critical nature of the item and the lack of adequate technical data for competitive solicitation. Interested vendors must provide necessary documentation for source approval along with their proposals, 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 Bridget M. Murphy at (215) 697-5047 or via email at BRIDGET.M.MURPHY6.CIV@US.NAVY.MIL for further information.