The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking a contractor for a sole source requirement to repair four units of the Shaft Assembly, Drive (NSN: 7R 1615-012725107, Part Number: 70361-25002-044). This procurement is critical as the government lacks sufficient data to engage alternative sources, emphasizing the specialized nature of the components involved, which are essential for helicopter rotor blades and drive mechanisms. Interested vendors must obtain Government Source Approval prior to award and submit the necessary documentation as outlined in the NAVSUP WSS Source Approval Brochure, available online. For inquiries, potential bidders can contact Dana L. Scott at dana.scott@navy.mil, with proposals due as specified in the solicitation.