This notice is for the procurement of a flight-critical aircraft engine part (NSN 7R-2840-014801741-MN), quantity of three units, with delivery FOB origin. The item requires engineering source approval, and only sources previously approved by the Government have been solicited; award cannot be delayed pending new source approval. New sources must submit all required source approval data per the NAVSUP WSS brochure with their proposal, or they will not be considered. The Government intends to solicit and negotiate with only one source under FAR 6.302-1, but all responsible sources may express interest and submit capability statements. This is a notice of intent, not a request for competitive proposals.