This is a solicitation for four Control-Propeller units, which must have clear, documented traceability to the OEM, Collins Aerospace. The items must be shipped with F.O.B. Destination or F.O.B. Origin terms. Quotations are being requested for a firm-fixed price purchase order, and this is an unrestricted requirement open to all responsible sources. The solicitation incorporates provisions in effect as of November 28, 2025.