This opportunity is for the repair of a flight-critical item (NSN 0Q-4730-014638722-CL, quantity 14) and requires Government source approval prior to award, as the Government lacks sufficient data to purchase from other than the current approved source. Delivery is FOB Origin. Only previously approved sources have been solicited, and new sources must submit detailed technical data as outlined in the NAVSUP WSS Source Approval Information Brochures with their proposal. The Government intends to solicit and negotiate with only one source under FAR 6.302-1, but all responsible sources may submit proposals. Proposals will be considered if received within 45 days of publication.