The requirement is for 6 each of a flight-critical part (NSN 7R-5985-015838968-CB), FOB origin, with engineering source approval required by the design control activity to maintain quality. Only previously approved sources have been solicited, and the Government intends to negotiate with only one source under FAR 6.302-1. Alternate sources must qualify through the NAVSUP WSS Source Approval Information Brochure process and submit all required technical data with their offer or document prior submission; incomplete packages will not be considered. New-source approval timing is generally not expected to delay award, and award may proceed based on Fleet support needs if approval cannot be completed in time. The acquisition is not being conducted under FAR Part 12 commercial-item procedures, though interested parties may identify commercial-item interest and capability to the contracting officer.