The Government seeks 23 EA of a flight-critical part, delivery FOB origin, under a proposed sole-source action because only previously approved sources have the required design capability, manufacturing/repair knowledge, and data rights. The item requires engineering source approval by the design control activity, and only sources previously approved by the Government for this item have been solicited. Unapproved sources may respond but must submit the source approval information required by the applicable NAVSUP WSS Source Approval Brochure with their offer, and failure to provide all required data will make an offer ineligible for award. Approval of a new source normally cannot be completed in time to avoid delaying award, so the Government may proceed based on Fleet support needs if approval cannot be processed in time. Award will be made only if the offeror, product/service, or manufacturer meets the qualification requirements at time of award.