This is an unrestricted solicitation for four new Door Assy units (NSN 1560-01-HR2-2517) for US Coast Guard aircraft, requiring clear traceability to the OEM, Sikorsky Aircraft Corporation or Spirit Aerosystems. The requested delivery date is December 30, 2026. All parts must be new, airworthy, and accompanied by a Certificate of Conformance. No drawings, specifications, or schematics are available from the agency. The location for performance of services is not specified.