The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of two units of a flight-critical part identified by NSN 7R-1680-015827988-E7. This procurement requires engineering source approval due to the unique design capabilities and manufacturing knowledge necessary to maintain the quality of the part, which is not readily available to the Government. Interested vendors must be approved sources or submit detailed information for source approval, as the contract will not be awarded without this approval, and the Government intends to negotiate with only one source under FAR 6.302-1. Proposals must be submitted within 45 days of this notice, and interested parties can contact Hayden Young at (215) 697-2928 or via email at HAYDEN.J.YOUNG3.CIV@US.NAVY.MIL for further details.