This requirement is for NSN 7R-1680-015612309-E7, reference part 7288233G001, quantity 2 each, delivered FOB origin. The item is flight critical and requires engineering source approval by the design control activity; only previously approved sources have been solicited, and the Government intends to negotiate with one source under FAR 6.302-1 because technical data does not support full and open competition. New or alternate sources must qualify through the cognizant Government engineering activity and submit the information required by the applicable NAVSUP WSS Source Approval Information Brochure with their proposal. Approval of a new source is normally not feasible within the time needed to avoid delaying award, and offers lacking required source approval data or prior submission documentation will not be considered. Interested responsible sources may still submit proposals, quotations, or capability statements, though the Government will decide whether to conduct a competitive procurement; FAR Part 12 commercial-item procedures are not being used, and drawings are not available.