The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking a sole source contract for the repair of a gearbox, input module, identified by NIIN: 012894810 and part number: 70351-38100-047. This procurement is critical as the government lacks sufficient data to contract with any source other than the current supplier, emphasizing the specialized nature of the item which is essential for helicopter rotor blades and drive mechanisms. Interested vendors must be approved sources and are required to submit necessary documentation as outlined in the NAVSUP WSS Source Approval Brochure, which can be accessed online. For inquiries, potential bidders should contact Julianna Macrillo at julianna.macrillo@navy.mil or by phone at (215) 697-1227.