This is an unrestricted solicitation for a firm-fixed price contract to purchase various new spare engine parts, anticipated to be awarded on a sole source basis to Rolls-Royce Corporation. All parts must be new approved items, and no drawings, specifications, or schematics are available from the agency. The contractor must furnish a Certificate of Conformance (COC) in the specified format. The anticipated award date is on or about June 1, 2026. The location for performance of services is not specified.