This opportunity is for the acquisition or repair of a flight-critical part (NSN 7R-1620-014086637-EL, QTY 5 EA) with delivery FOB Origin. Only sources previously approved by the Government for this item are eligible for award, as technical data and rights are not available for competition. If you are not an approved source, you must submit detailed source approval information as outlined in the NAVSUP WSS brochures with your proposal. Proposals will be considered if received within 45 days of this notice's publication. The location for performance of services is not specified.