This opportunity is for the procurement of a single unit of a flight-critical item (NSN 1R-9999-LLCFWQ689-V2) for which the government lacks sufficient data to compete the requirement, limiting solicitation to previously approved sources. Delivery is FOB origin, and the location for performance is not specified. Prospective bidders who are not already an approved source must submit a complete Source Approval Request with their proposal, as the approval process cannot delay the award. All proposals must be received within 45 days of the synopsis publication (or 30 days if under an existing BOA) to be considered. No specific budget amount is provided.