This notice describes an intended sole-source procurement under FAR 6.302-1 for NSN 3655-017002793, quantity 24 each, with delivery FOB origin. The item is flight-critical, and offerors must have Government source approval prior to contract award because the technical data is not adequate to support full and open competition. Only sources previously approved by the Government for this item have been solicited; alternate sources must submit qualification data in accordance with the NAVSUP WSS Source Approval Information Brochure, and offers failing to provide all required data will not be considered. Although the Government intends to negotiate with only one source, all