This is a Government notice of intent to negotiate a sole-source contract under FAR 6.302-1 for NSN 7R-1680-016422016-P8, quantity 6 EA, delivery FOB Origin. The item is flight critical and requires Government engineering source approval because the approved source(s) hold essential data rights, manufacturing/repair knowledge, or technical data not economically available to the Government. Only previously approved sources have been solicited; alternate or new sources must submit the required source approval information with their proposal, and award may proceed based on Fleet support needs if source approval cannot be completed in time. Responsible sources may identify their interest and capability or submit proposals, quotations, or capability statements, but this is not a request for competitive proposals. FAR Part 12 commercial-item procedures are not being used, though interested parties may identify commercial-item interest or capability to the contracting officer, and standardized documents are available via ASSIST/DODSSP.