The Government intends a sole-source award under FAR 6.302-1 for a flight-critical part that requires Government source approval prior to contract award, and only previously approved sources have been solicited. The requirement is for NSN 7R-5821-015855355-P8, quantity 6 EA, TDP VER 001, delivery FOB Origin. New sources must submit the applicable NAVSUP WSS Source Approval Information Brochure documentation with their offer; offers lacking required data or prior submission documentation will not be considered. If new-source approval cannot be processed in time or approval requirements prevent timely fulfillment, award may proceed based on Fleet support needs. Responsible sources may identify their interest and capability, but this notice is not a request for competitive proposals.