The government seeks 4 each of a flight-critical part (reference 284A5036-106) with delivery FOB origin. The item requires Government source approval before contract award, and only previously approved sources have been solicited; new sources must submit the required NAVSUP WSS Source Approval Information Brochure data with their offer. Offers that fail to provide all required source approval data, or evidence of prior complete submission, will not be considered for award. The Government intends to solicit and negotiate with only one source under FAR 6.302-1, though responsible sources may identify interest/capability or submit proposals; this notice is not a request for competitive proposals. Award is contingent on meeting qualification requirements at time of award, and Trade Agreements clauses may apply.