The requirement is for 34 units, delivery FOB origin, of a flight-critical item that must be acquired from or repaired by a Government-approved source; only previously approved sources have been solicited. Because suitable technical data, Government data rights, or manufacturing/repair knowledge are not available, non-approved offerors must submit the source-approval information specified in the applicable NAVSUP WSS brochure with their proposal. Offers lacking all required source-approval data, or with no documented prior submission, will not be considered, and award may proceed based on Fleet support needs if a new-source approval cannot be processed in time. The Government is not using FAR Part 12 commercial-item procedures, though interested parties may identify their interest and capability to satisfy the requirement with a commercial item to the contracting officer.