The procurement is for a flight-critical item (NSN 7R-5998-011403609-GF) with a quantity of 6 units, delivered FOB origin. The item requires Government source approval, and only previously approved sources have been solicited due to insufficient technical data for full competition. New sources must submit required source approval information via NAVSUP WSS brochures, and offers without that documentation will not be considered. The Government intends to solicit and negotiate with only one source under FAR 6.302-1, though all responsible parties may express interest. Award will only be made to offerors meeting the qualification requirements at the time of award.