This solicitation seeks quotations for the overhaul of three booster pumps for U.S. Coast Guard HC-144 aircraft, with specific NSNs and part numbers. The contract is anticipated to be a firm-fixed-price purchase order awarded on a sole source basis to Parker Hannifin Corp, though all responsible sources may submit quotes. Offerors must have the technical expertise and access to OEM parts required for the repairs, as no drawings or specifications are available from the USCG. Shipping terms are limited to F.O.B. Destination or F.O.B. Origin. The applicable NAICS code is 336413 with a small business size standard of $40 million.