This opportunity is for the acquisition of NSN 7R-6625-016782841-GE, quantity 2, with delivery FOB origin. The item requires engineering source approval and is flight critical, meaning only previously approved sources can be solicited; new sources must submit detailed qualification data with their proposal. Proposals from non-approved sources will not be considered unless all required source approval information is provided. The government intends to solicit and negotiate with only one source under FAR 6.302-1, but all responsible sources may submit capability statements. Proposals will be considered if received within 45 days of this notice's publication.