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 flight-critical item identified by NSN 7R-4920-016445220-SX. The procurement involves a quantity of four units, with delivery terms set to FOB Origin, and requires government source approval prior to contract award due to the critical nature of the item and the inadequacy of available technical data for open competition. Interested vendors must provide comprehensive documentation as outlined in the NAVSUP WSS Source Approval Information Brochures, and failure to submit the required data will result in disqualification from the award process. For further inquiries, interested parties can contact Chris Campellone at (215) 697-2530 or via email at CHRISTOPHER.CAMPELLO@NAVY.MIL.