This requirement is for 18 EA of NSN 7R-5836-016800777-GF, FOB origin, and requires Government source approval by the design control activity because the item is flight critical and/or available technical data does not support full and open competition. Only previously approved sources have been solicited, and the Government intends to solicit and negotiate with only one source under FAR 6.302-1. Non-approved sources must submit the information required by the applicable NAVSUP WSS Source Approval Information Brochure with their offer, or document prior submission of that data, to be considered. Approval of a new source normally cannot be completed in time to delay award, so award may proceed based on Fleet support needs if approval cannot be processed in time. All responsible sources may identify their interest and capability or submit proposals, quotations, or capability statements, although this notice is not a request for competitive proposals.