The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure a sole source supply of fold hinge assemblies and similar replacement parts from Sikorsky. The procurement includes specific items such as the "Shaft Assembly, Fan" and "Fold Hinge Assembly," with quantities of 2 and 5 respectively, and is classified under the PSC code 1615, which pertains to helicopter rotor blades and components. This procurement is critical for maintaining operational readiness and support for naval aviation systems, and interested parties must submit their capability statements to the primary contact, Kate N. Schalck, via email at kate.n.schalck.civ@us.navy.mil, within 45 days of this notice, as the government intends to award the contract under an existing Basic Ordering Agreement.