The United States Coast Guard is conducting market research to identify potential sources capable of overhauling a specific hydraulic pump and tail rotor servo, and repairing a specific servo cylinder. All potential sources must be a Naval Supply Systems Command (NAVSUP) approved source, with Parker Hannifin Corporation and Sikorsky Aircraft Corporation listed as identified OEM/approved sources. This is a sources sought notice for planning purposes only and is not a solicitation or request for proposals. Interested firms must respond by providing specific company information and answering detailed capability questions. No budget, performance location, or solicitation timeline is provided in this market research notice.