NAVSUP WSS seeks new spares for NSN 7R-4820-013726151-EY, quantity 30 EA, FOB origin; no drawings are available. The item is flight critical and requires Government source approval prior to award, with only previously approved sources solicited due to unavailable technical data and source data rights. New sources must submit the required Source Approval Brochure information with their offer, and offers lacking required data or prior data-submission documentation will not be considered. The Government intends to solicit and negotiate with only one source under FAR 6.302-1, though responsible sources may identify interest/capability or submit proposals, quotations, or capability statements. Information received will normally be used solely to determine whether to conduct a competitive procurement, and FAR Part 12 commercial-item policies are not being used.