The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of 15 sets of fan blades (NSN 7R-2840-016578391-F7) that are critical for aircraft operations. The items are classified as commercial/nondevelopmental/off-the-shelf products, and potential suppliers must obtain Government source approval prior to contract award due to the flight-critical nature of the components. Interested vendors are required to submit detailed technical data and documentation to demonstrate their capability to produce the specified items, as only previously approved sources will be considered for this contract. Proposals must be submitted within 45 days of the notice, and all inquiries should be directed to Charles F. Horan at (215) 697-1303 or via email at CHARLES.F.HORAN@NAVY.MIL.